p26 pre-pulsar shuttle

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p26 pre-pulsar shuttle
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 ]] #C [[ GPS 6 ZOOM 7 LOOP 26 PAUSE 3 ]]
Pattern type Oscillator
Oscillator type Shuttle
Number of cells 144
Bounding box 39×39
Period 26
Mod 26
Heat 120.6
Volatility 0.95
Strict volatility 0.95
Discovered by David Buckingham
Year of discovery 1983

p26 pre-pulsar shuttle 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.[1] 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,[2] 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.


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

See also


  1. Dean Hickerson's oscillator stamp collection.
  2. Jason Summers' all-osc oscillators collection

External links