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2b2o6b$o2bo6b$2obob2o3b$bobo2bo3b$bo4bob2o$2b3obob2o$5bo4b$4bo5b$4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 GPS 1.5 ]]
Pattern type Oscillator
Oscillator type Muttering moat
Billiard table
Number of cells 26
Bounding box 10×9
Period 3
Mod 3
Heat 2
Volatility 0.11
Strict volatility 0.11
Rotor type 1-2-3
Discovered by David Buckingham
Year of discovery 1972

1-2-3 was found by David Buckingham in August 1972.[1] This is one of only three essentially different period-3 oscillators with only three cells in the rotor. The others are stillater and cuphook.

A 69-glider synthesis is known for a stator variant of this oscillator and was discovered by Martin Grant.[2]

See also


  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Martin Grant (December 27, 2015). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

External links