Life 21-Bit Period-2 Pseudo-Oscillators

Syntheses
First 1000 | Second 1000 | Third 1000 | Fourth 1000 | Fifth 1000 | Sixth 1000 | Seventh 1000 | Eighth 1000 | Ninth 1000 | Tenth 1000 | 11th 1000 | 12th 1000 | 13th 1000 | 14th 1000 | 15th 1000 | 16th 1000 | 17th 1000 | 17th 1000 | 19th 1000 | 20th 1000 | 21st 1000 | 22nd 1000 | Last 134



Syntheses of 11 of the 22134 21-bit period 2 pseudo-oscillators

All of these can be synthesized using the same techniques that are used for smaller pseudo-oscillators and pseudo-still-lifes, except one non-trivial one (shown below) and 169 trivial ones (not shown below) that involve adding a small still-life or oscillator to a large complex period 2 oscillator that does not yet have a synthesis:

Here are syntheses (or lack thereof) for 11 of these. All of the expensive ones were once on the "non-trivial without synthesis" list for a long time, but were eventually solved. Note that these, plus the ones without syntheses, all share three mechanisms that are all very difficult to synthesize: a beacon sandwiched between two other pieces, a bipole with pieces wrapped around it, or a cis python whose free end is near something else.

21-bit pseudo-P2

Beehive on beehive on tripole [10] Beacon between gull w/ two long hooks [178] Beacon between shillelagh and up cis python [88] Up bipole on table on cis python [32] Bipole on carrier behind eater [21] Up snake on up beacon above long hook w/ tail [x]
Up cis python on up beacon below bipole [55] Up cis python on up beacon on bipole [55] Up bipole on feather on hook w/ tail [32] Down bipole on long cis integral [18] Down tripole below carrier bridge snake [18]  



The 22134 21-bit period 2 pseudo-oscillators

The first 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 1-1000


The second 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 1001-2000


The third 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 2001-3000


The fourth 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 3001-4000


The fifth 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 4001-5000


The sixth 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 5001-6000


The seventh 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 6001-7000


The eighth 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 7001-8000


The ninth 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 8001-9000


The tenth 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 9001-10000


The 11th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 10001-11000


The 12th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 11001-12000


The 13th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 12001-13000


The 14th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 13001-14000


The 15th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 14001-15000


The 16th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 15001-16000


The 17th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 16001-17000


The 18th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 17001-18000


The 19th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 18001-19000


The 20th 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 19001-20000


The 21st 1000 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 20001-21000


The 22nd 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 21001-22000


The last 134 21-bit period 2 pseudo-oscillators

21-bit period 2 pseudo-oscillators 22001-22134



Other 21-bit objects: still-lifes, pseudo-still-lifes, P2 oscillators, P2 pseudo-oscillators, P3 oscillators, P3 pseudo-oscillators, P4 pseudo-oscillators, P5 oscillators, P5 pseudo-oscillators, P6 oscillators, P6 pseudo-oscillators, P8 oscillators, P8 pseudo-oscillators, P10 pseudo-oscillators, P15 oscillator, P15 pseudo-oscillators, P30 pseudo-oscillator.

Other period 2 pseudo-oscillators: 10-bit, 11-bit, 12-bit, 13-bit, 14-bit, 15-bit, 16-bit, 17-bit, 18-bit, 19-bit, 20-bit, 21-bit, 22-bit, 23-bit, 24-bit, 25-bit, 26-bit and larger.

Other pseudo-oscillators by period: 2, 3, 4, 5, 6, 8, 10, 12, 15, 30, 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.

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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.