1-2-3-4

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1-2-3-4
x = 11, y = 8, rule = B3/S23 5bo$4bobo$3bobobo$3bo3bo$2obobobob2o$obo5bobo$3b5o$5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Oscillator type Billiard table
Number of cells 25
Bounding box 11×8
Period 4
Mod 4
Heat 2
Volatility 0.14
Strict volatility 0.14
Discovered by Dean Hickerson
Year of discovery 1989

1-2-3-4 is a period-4 oscillator and billiard table configuration found by Dean Hickerson in August 1989.[1] A 24-glider synthesis is known for a stator variant of this oscillator in which the bottom edge is stabilized by a tub, while a 27-glider synthesis was found for the canonical version by Martin Grant in May 2021.[2]

See also

References

  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 5, 2022.
  2. Martin Grant (May 24, 2021). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

External links

  • 25P4.4 at Heinrich Koenig's Game of Life Object Catalogs