24-Bit Life Objects

Still-lifes | Pseudo-still-lifes | P2 oscillators | P2 pseudo-oscillator | P3 oscillators | P3 pseudo-oscillator | P4 oscillator | P5 oscillator | P5 pseudo-oscillators | P6 oscillator | P6 pseudo-oscillators | P8 oscillator | P8 pseudo-oscillators | P10 oscillator | P10 pseudo-oscillators | P12 oscillators | P15 oscillators | P15 pseudo-oscillator | P24 oscillators | P30 oscillators | P30 pseudo-oscillators | P36 oscillator | P60 oscillator | P60 pseudo-oscillator | Spaceships | Constellations



The 4051726 24-bit still-lifes

Unfortunately, due to space limitations, these cannot be shown.

Syntheses for 26 of these are shown.

24-bit still-lifes

24. 46433 [9] 24. 46435 [6] 24. 46481 [9] 24. 274188 [10] 24. 274195 [14] 24. 274324 [5] 24. 274653 [10] 24. 280038 [8] 24. 309001 [9]
24. 503479 [11] 24. 626031 [8] 24. 917821 [10] 24. 922231; B1 catalyst [20] 24. 969413 [9] 24. 977307 [8] 24. 1386148 [17] 24. 1937769 [18] 24. 1938060 [6]
24. 1938588 [16] 24. 1947251 [11] 24. 2442037 [9] 24. 3023457 [10] 24. 3023507 [11] 24. 3120588 [13] 24. 3687057 [14] 24. 3939184 [12]  

Bellman One (B1) is a specific eater found using Mike Playle's Bellman search program. (Actually, the name refers to the mechanism, rather than the form; the forms shown are the smallest currently known). It consists of a still-life and an eater, and is specifically designed to eat traffic-lights. A slight variant of it eats gliders instead.


The 3069134 24-bit pseudo-still-lifes

Unfortunately, due to space limitations, these cannot be shown.

Syntheses for 12 these are shown.

24-bit pseudo-still-lifes

Two blocks on two caps [6] Block on block on pond on block on block [10] Three pairs of block on block [9] Pond on symmetric scorpion [6] Four ships in a ring [6] Four point- to- point ships [16]
Block on block below symmetric scorpion [6] Down pair of ships on pair of ships [6] Block on block on bi- pond [6] Up boat on snow cap above eater [5] Up eater tail on long cis shillelagh w/ fuse w/ tail [28] Four blocks on pond [10]


11 24-bit period 2 oscillators

24-bit period 2 oscillators

Spark coil from boat on D on house [10] Test tube baby between up bookends [13] Cis sparking tets [7] Washing machine [8] Fore and back; Complem- entary blinker [20] Test tube twins [25]
Trans sparking tets [8] Bookend on light bulb [12] Two boats on two loaves [15] Diagonal light bulb on two snakes [65] 2x2 Phoenix [29]


1 24-bit period 2 pseudo-oscillator

24-bit PP2

Cis cis quad-beacon [8]


2 24-bit period 3 oscillators

24-bit P3

Ls on table tie table on ship [13] Star [20]


1 24-bit period 3 pseudo-oscillator

24b PP3

Up cis caterer below caterer [22]


The 571 24-bit period 4 oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

The ones based on mold on a still-life are too numerous to show, but most are are easy to synthesize using standard techniques, except some that are based on 19-bit still-lifes that do not yet have syntheses. The others are shown.

24-bit period-4 oscillators

24-bit P4 oscillator #1 [x] 24-bit P4 oscillator #2 [x] 24-bit P4 oscillator #3 [x] 24-bit P4 oscillator #4 [19] Quarter jack w/ carrier [61] Quarter jack w/ curl [32] Trans molds sharing sparks [10]
Cis molds sharing sparks [x] Eater and block eating loaf w/ tail w/ cape [20] Eater w/ cape and block eating loaf w/ tail [20] Carrier siamese eater and block eating loaf w/tail [17] Snake siamese eater and block eating loaf w/tail [18] Eater and block eating loaf w/ tail siamese carrier [16] Eater and block eating loaf w/ tail siamese snake [15]
Eater and block eating integral w/ loaf and tail [16] Down mold tie mold [20] Up mold tie mold [20] Confused eaters w/ long boat [21] Eater and block eating integral w/ loaf and long hook [16] Integral w/ tail and block eating loaf w/ tail [19] Eater and block eating integral w/ loaf and down boat [14]
Integral and block eating integral w/ loaf [15] Eater and block eating gull w/ loaf [14] Eater and block eating integral w/ loaf and up boat [15] Integral w/ down boat and block eating loaf w/ tail [19] Confused eaters w/ eater w/ cape [28] Confused eaters w/ snake siamese eater [26] Confused eaters w/ carrier siamese eater [25]
Integral w/ down boat and block eating loaf w/ tail [17] Confused eaters w/ boat and integral [24] Gull and block eating loaf w/ tail [14] Integral w/ up boat and block eating loaf w/ tail [18] Confused eaters w/ integral w/ tail [27] Confused eaters w/ tub and integral w/ hook [26] Confused eaters w/ integral w/ long hook [27]
Confused eaters w/ integral w/ down boat [25] Confused eaters w/ tub and integral w/ tub [26] Confused eaters w/ two integrals [26] Confused eaters w/ gull [22] Confused eaters w/ integral w/ up boat [26]  


The 419 24-bit period 5 oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

Synthesis for 1 of these are shown; all others are easy to synthesize using standard techniques except three expanded Elkies's P5s, also shown below, and a few cases of Silver's P5.

24 bit P5

Block on Elkies's P5 w/ loaf [28] Elkies's P5 w/ claw w/ boat and pre-block [x] Elkies's P5 w/ long bookend and claw and pre-block [x] Elkies's P5 siamese snake [x]


The 490 24-bit period 5 pseudo-oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

All of these are easy to synthesize using standard techniques.


The 186 24-bit period 6 oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

All of these except the first and last categories have a pseudo-period of 6, a composite of 2 and 3.

Syntheses for 3 of these (2 still unknown) are shown; all the others are easy to synthesize using standard techniques.

24-bit P6

Four blinkers around four blocks [12] P6 w/ boat and head [x+6] P6 w/ block and tub [x+5]


The 336 24-bit period 6 pseudo-oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

All of these except those involving unix or blonker have a pseudo-period of 6, a composite of 2 and 3.

All of these are easy to synthesize using standard techniques, except these 4, for which syntheses are also trivial, but that rely on a predecessor for which no synthesis yet exists.

24-bit pseudo-P6

Up beacon on down skewed poles [x+6] Up beacon below down skewed poles [x+7] Down beacon on down skewed poles [x+6] Down beacon below down skewed poles [x+6]


The 12 24-bit period 8 oscillators

24-bit P8

Down blocker on up long bookend w/ hook [14] Up blocker on up long bookend w/ hook [14] Up blocker on up long bookend w/ tub [14] Down blocker on up long bookend w/ tub [14] Down blocker on up long bookend w/ hook [14] Up figure-8 and trans mold sharing sparks [13]
Down blocker on up long bookend w/ tub [14] Up blocker on up long bookend w/ hook [16] Up figure-8 and cis mold sharing sparks [13] Up blocker on up long bookend w/ tub [16] Down figure-8 and trans mold sharing sparks [9] Down figure-8 and cis mold sharing sparks [9]


The 78 24-bit period 8 pseudo-oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

Syntheses for 2 of these are shown; all others are easy to synthesize using standard techniques.

24-bit pseudo-P8

Up figure-8 on figure-8 [11] Down figure-8 on figure-8 [8]


The 2 24-bit period 10 oscillators

24-bit P10s

Merzenich's 24-bit P10 [40] Pseudo- barber- pole tie tripole [52]

The pseudo-barber-pole tie tripole has a pseudo-period of 10, a composite of 2 and 5.


The 37 24-bit period 10 pseudo-oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

All of these have a pseudo-period of 10, a composite of 2 and 5.

All of these are easy to synthesize using standard techniques.


The 4 24-bit period 12 oscillators

24-bit P12 oscillators

Up mold on down candel- frobra [17] Up mold on up candel- frobra [18] Down mold on down candel- frobra [17] Down mold on up candel- frobra [18]

All of these have a pseudo-period of 12, a composite of 3 and 4.


The 24 24-bit period 15 oscillators

24-bit period 15 oscillators

Penta- decathlon on penta- decathlon #1 [8] Block on down long bookend eating penta- decathlon [9] Integral w/ long tail eating penta- decathlon [10] Block on up long bookend eating penta- decathlon [9] Integral w/ cis hook eating penta- decathlon [14] Integral w/ very long hook eating penta- decathlon [12]
Penta- decathlon and trans caterer sharing sparks [15] Penta- decathlon and cis caterer sharing sparks [15] Penta- decathlon on penta- decathlon #2 [8] Boat tie eater eating penta- decathlon [9] Eater head siamese eater eating penta- decathlon [10] Python siamese eater eating penta- decathlon [10]
Penta- decathlon on penta- decathlon #4 [8] Integral w/ down barge eating penta- decathlon [11] Integral w/ beehive eating penta- decathlon [10] Integral w/ claw eating penta- decathlon [10] Eater w/ feather eating penta- decathlon [11] Penta- decathlon on penta- decathlon #5 [8]
Gull w/ hook eating penta- decathlon [10] Eater tail siamese eater eating penta- decathlon [11] Penta- decathlon on penta- decathlon #6 [8] Gull w/ tub eating penta- decathlon [8] Integral w/ up barge eating penta- decathlon [9] Integral w/ fuse w/ tail eating penta- decathlon [10]


The 460 24-bit period 15 pseudo-oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

Synthesis for 1 of these is shown; all are easy to synthesize using standard techniques.

24b PP15

Penta- decathlon on penta- decathlon #3 [7]


The 4 24-bit period 24 oscillators

24-bit P24 oscillators

Up figure-8 and up caterer sharing sparks [18] Down figure-8 and up caterer sharing sparks [15] Up figure-8 and down caterer sharing sparks [18] Down figure-8 and down caterer sharing sparks [15]

All of these have a pseudo-period of 24, a composite of 3 and 8.


The 2 24-bit period 30 oscillators

24-bit period 30 oscillators

Queen bee between block and down close integral [8] Queen bee between block and up close integral [8]


The 61 24-bit period 30 pseudo-oscillators

Unfortunately, due to time limitations, these cannot yet be shown. These consist of:

All of these are easy to synthesize using standard techniques.

All of these except the 2 with queen bees have a pseudo-period of 30, a composite of 2 and 15, shown below.

20-bit PP30

Queen bee between trans block and block on block [6] Queen bee between cis block and block on block [6]


The 1 24-bit period 36 oscillator

24b P36

Elkies's Integral and eater hassling two T tetrominos [10]


The 1 24-bit period 60 oscillator

24-bit P60

Penta- decathlon and mold sharing sparks [8]


The 1 24-bit period 60 pseudo-oscillator

24-bit PP60

Mold on Penta- decathlon [9]

This has a pseudo-period of 60, a composite of 4 and 15.


The 7 24-bit spaceships

24-bit spaceships

MWSS on MWSS #3 [7] MWSS on HWSS #4 [7] MWSS on HWSS #5 [7] MWSS on HWSS #6 [7] MWSS on HWSS #7 [7] MWSS on HWSS #8 [7] Sidecar on HWSS [8]

All of these have a period of 4 and an orthogonal velocity of c/2. They move two cells up every 4 generations.


4 easily-constructible 24-bit constellations

larger constellations

Small fleet [6] Fleet [3] Small honeyfarm [6] Honeyfarm [2]



Other sizes: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 and larger, not quite stable objects.

See also: Life objects sorted by: counts, frequency of occurrence, cost in gliders, name, size in bits, or type.

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Copyright © 1997, 1998, 1999, 2013, 2014 by Mark. D. Niemiec. All rights reserved.
This page was last updated on 2015-02-19.