Life Period-6 Oscillators

Size in bits: 16 | 18 | 20 | 21 | 22 | 23 | 24 | 25 | Larger
Cost in gliders: 6 | 1 glider/bit | >1 glider/bit | unknown
Frequency of occurrence

The 1 sixteen-bit period 6 oscillator

Unix [6]

The Unix is the smallest oscillator that produces a period 6 diagonal bit spark.

The 4 eighteen-bit period 6 oscillators

Up beacon on up candel- frobra [13]

Up beacon on down candel- frobra [13]

Down beacon on down candel- frobra [13]

Down beacon on up candel- frobra [13]

All of these have a pseudo-period of 6, a composite of 2 and 3.

The 11 twenty-bit period 6 oscillators

Up bipole on up candel- frobra [16]	Up bipole on down candel- frobra [16]	Down bipole on down candel- frobra [16]	Down beacon on cuphook w/ pre- block [17]	Up beacon on cuphook w/ pre- block [18]	Up beacon on down cuphook w/ tail [9]
Up beacon on up cuphook w/ tail [14]	Down beacon on up cuphook w/ tail [12]	Blonker [25]	Down bipole on up candel- frobra [17]	Down beacon on down cuphook w/ tail [13]

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

The 15 21-bit period 6 oscillators

Up tripole on up candel- frobra [19]	Up tripole on down candel- frobra [19]	Down tripole on down candel- frobra [19]	Up beacon on cuphook w/ pre- block w/ tub [21]	Down beacon on cuphook w/ pre- block w/ tub [20]
Up beacon on down cuphook w/ tub and tail [12]	Up beacon on up cuphook w/ tub and tail [17]	Down beacon on up cuphook w/ tub and tail [15]	Down beacon on down cuphook w/ tub and tail [16]	Up beacon on up long bookend eating eater [12]
Eater eating test tube baby [12]	Down beacon on down long bookend eating eater [12]	Up beacon on down long bookend eating eater [12]	Down tripole on up candel- frobra [17]	Down beacon on up long bookend eating eater [12]

All of these have a pseudo-period of 6, a composite of 2 and 3.

The 43 22-bit period 6 oscillators

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

2 Unix on table.
16 Candelfrobra on period 2 oscillator.
6 Cuphook on period 2 oscillator.
16 Cuphook w/tail on period 2 oscillator.
3 Eater eating period 2 oscillator.

All of these except Unix on table have a pseudo-period of 6, a composite of 2 and 3.

All of these are easy to synthesize using standard techniques.

The 71 23-bit period 6 oscillators

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

16 Candelfrobra on period 2 oscillator.
12 Cuphook on period 2 oscillator.
32 Cuphook w/tail on period 2 oscillator.
9 Eater eating period 2 oscillator.
2 Miscellaneous (see below).

All of these except the two below have a pseudo-period of 6, a composite of 2 and 3.

Syntheses for 2 of these (1 still unknown) are shown; all the others are easy to synthesize using standard techniques.

P6 w/ block and head [x]

Nicolay Belu- chenko's P6 between two eaters [24]

The 186 24-bit period 6 oscillators

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

6 Unix on cap or long bookend.
75 Candelfrobra on period 2 oscillator.
22 Cuphook on period 2 oscillator.
60 Cuphook w/tail on period 2 oscillator.
18 Eater eating period 2 oscillator.
2 Jam on griddle.
3 Miscellaneous (see below).

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.

Four blinkers around four blocks [12]

P6 w/ boat and head [x+6]

P6 w/ block and tub [x+5]

25-bit period 6 oscillators

There are several hundred 25-bit period 6 oscillators. Unfortunately, these have not yet been counted. Most consist of combinations of existing components.

Syntheses for 8 of these (6 still unknown) are shown; all the others should be easy to synthesize using standard techniques.

P6 w/ table and head [x+6]

P6 w/ ship and head [x+6]

P6 w/ block and boat [x+7]

P6 w/ carrier and head [x+12]

P6 w/ boat and tub [x+11]

P6 w/ beacon and head [x+7]

Short key and skewed pole tie bipole [55]

Bent key and skewed pole tie bipole [49]

The last two have a pseudo-period of 6, a composite of 2 and 3.

21 period 6 oscillators 26 bits and larger

A for All [14]	Jason Summers's P6 [40]	Sesqui- unix [12]	Merzenich's unix on eater [13]	Extremely impressive [30-35]	33-bit eater- hassled P6 [50-72]
Two cis unices [11]	$rats [101-124]	32-bit P6 #1 [72]	Two trans unices [11]	Two touching trans- unices [14]	Two touching cis- unices [14]
Lonely bee hassled by four toads [19]	Ship hassled by two unices [17]	Three cis cis unices [23]	Three cis trans unices [16]	Three trans trans unices [17]	Beluchenko's two unices and block on corner table [24]
Merzenich's unix on dual eater-2 [49]	Merzenich's 4 clocks hassling 2 siamese unices [42]	Unicycle; Four cis unices [28]

Extremely impressive is an unusual oscillator. It appears at first glance to be a billiard table, but isn't really, as one of the sides temporarily falls apart, but then re-forms later.