Size in bits:
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
Larger
Cost in gliders:
3 |
1 glider/bit |
>1 glider/bit |
unknown
Frequency of occurrence
Pseudo- barber- pole; Flammen- kamp's P5 [28] |
The pseudo-barber-pole superficially resembles the whole series of period 2 barber-pole oscillators, but strangely enough, has a period of 5 instead. It forms the basis for a large number of larger period 5 oscillators (and many with periods that are multiples of 5, such as period 10).
Octagon II [6] |
Octagon II has eight fingers that can sometimes be used to hassle other oscillators like the period 50 Traffic Jam.
Silver's P5 on snake [19] | Silver's P5 on snake [14] |
Fumarole [7] | Silver's P5 on python [23] | Silver's P5 on eater [24] | Silver's P5 above eater [12] |
The Fumarole is the smallest oscillator that produces a period 5 domino spark.
Unfortunately, due to time limitations, these cannot yet be shown. These consist of:
Syntheses for 5 of these are shown; all others are easy to synthesize using standard techniques except one expanded Elkies's P5 and one Silver's P5, also shown below.
Unfortunately, due to time limitations, these cannot yet be shown. These consist of:
Synthesis for 1 of these is shown; all others are easy to synthesize using standard techniques except one expanded Elkies's P5, also shown below, and a few cases of Silver's P5.
Elkies's P5 w/ claw w/ tub and pre-block [x] | Pentoad 1h2; Pentoad between eater and bookend and block [19] |
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.
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] |
Two pentoads between two eaters [17] | Hooks on two snakes [22] | Heart [15] | Two pentoads between two eaters and a pond [19] | 40-bit P5 oscillator [27] | Harbor [34] |
Octagon II [6] |
Octagon II has eight fingers that can sometimes be used to hassle other oscillators like the period 50 Traffic Jam.
Silver's P5 above long canoe [20] | Silver's P5 above extra long snake [20] | Silver's P5 on up long hat [21] |
Elkies's P5 w/ claw and pre-block [x] | Silver's P5 before cis shil- lelagh w/ tub [x] |
Octagon II [6] (1.7e9) |
Octagon II has eight fingers that can sometimes be used to hassle other oscillators like the period 50 Traffic Jam.
Related: period-5 pseudo-oscillators.
Other oscillators by period: 2, 3, 4, 5, 6, 8, 10, 12, 14, 15, 24, 30, 36, 60, other.
Other types: still-lifes, pseudo-still-lifes, oscillators, pseudo-oscillators, oscillators by period, pseudo-oscillators by period, guns, multi-colored Life, basic spaceships and pseudo-spaceships, exotic spaceships, spaceships flotillae, puffers, constellations, methuselahs, not quite stable objects.
See also: Life objects sorted by: counts, frequency of occurrence, cost in gliders, name, size in bits, or type.
Copyright © 1997, 1998, 1999, 2013, 2014 by Mark. D. Niemiec.
All rights reserved.
This page was last updated on
2015-02-19.