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3b2ob$2bo2bo$o2bobo$o3bob$o5b$3bo2b$b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]]
Pattern type Oscillator
Number of cells 13
Bounding box 7×7
Period 3
Mod Unknown
Heat 7.3
Volatility 0.55
Strict volatility 0.55
Discovered by Achim Flammenkamp
Year of discovery 1988

Jam was found by Achim Flammenkamp in 1988, but not widely known about until its independent discovery (and naming) by Dean Hickerson in September 1989. In terms of its 7×7 bounding box it ties with trice tongs as the smallest period 3 oscillator, though caterer has fewer cells. It is also about the seventeenth most common naturally-occurring oscillator, being slightly less common than the blocker.[1]

See also


  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.

External links