P26 pre-pulsar shuttle

Pre-pulsar shuttle 26
x = 39, y = 39, rule = B3/S23 12b2o11b2o$12b2o3bo3bo3b2o$17bo3bo$17bo3bo$11bo15bo$10bobo13bobo$11bo 3b3o3b3o3bo$15bobo3bobo$15b3o3b3o2$5bo27bo$4bobo25bobo$2o3bo27bo3b2o$ 2o35b2o$16b2o3b2o$6b3o8bo3bo8b3o$6bobo5bo9bo5bobo$b3o2b3o5b2o7b2o5b3o 2b3o4$b3o2b3o5b2o7b2o5b3o2b3o$6bobo5bo9bo5bobo$6b3o8bo3bo8b3o$16b2o3b 2o$2o35b2o$2o3bo27bo3b2o$4bobo25bobo$5bo27bo2$15b3o3b3o$15bobo3bobo$ 11bo3b3o3b3o3bo$10bobo13bobo$11bo15bo$17bo3bo$17bo3bo$12b2o3bo3bo3b2o$ 12b2o11b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]]
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Pattern type	Oscillator
Oscillator type	Shuttle
Number of cells	200
Bounding box	37 × 37
Period	26 (mod: Unknown)
Heat	113.2
Volatility	0.81 | 0.81
Kinetic symmetry	Unspecified
Discovered by	David Buckingham
Year of discovery	1983
Rules Outer-totalistic rules B3/S23 – B3/S2378 # of rules 22 = 4
Pattern files Plaintext prepulsarshuttle26.cells RLE prepulsarshuttle26.rle
Identifiers apgcode xp26_y1o4s0f9x1110111x9f0s4ozggml54c32y04o4x4o4y023c45lmggzhw1x8ggwggccxccggwgg8x1whzry2hy0hhy3hhy0hy2rzhwgx211w1166x6611w112xgwhz11dlk46o8y0434x434y08o64kld11zy13470uixggg0gggxiu0743

Pre-pulsar shuttle 26 is a period-26 pre-pulsar shuttle oscillator discovered by David Buckingham on January 18, 1983 with an alternate stabilization using beehives rather than blinkers. Its original form was the first period-26 oscillator to be found. It is composed of four 14-generation pre-pulsar shuttle mechanisms that use a blinker stabilization found by Noam Elkies on April 22, 1997, as well as a central 12-generation pre-pulsar shuttle mechanism composed of four beacons. On November 17, 2016, Thunk found a smaller 14-generation pre-pulsar shuttle mechanisms, resulting in a 144-cell variant of this oscillator.

The 200-cell variant was the smallest known period-26 oscillator (in terms of minimum population) until the discovery of the p26 glider shuttle in February 2012. The smallest known period-26 oscillator is currently 87P26.

Image gallery

Generation 4 reveals four pre-pulsars (black) being hassled by a 14-generation mechanism (green) and a 12-generation mechanism (red).

The original pre-pulsar shuttle 26 RLE: here

File:Prepulsarshuttle26variant.png A pre-pulsar shuttle 26 variant with a minimum population of 144. View animated image. RLE: here Catagolue: here

See also

• Pre-pulsar shuttle oscillators

External links

• P26 pre-pulsar shuttle at Adam P. Goucher's Catagolue