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b2o5b$bo6b$4bo3b$3b2o3b2$b4o3b$o4bo2b$2o2bobob$4bo2bo$5bobo$6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Family Beacon
Number of cells 21
Bounding box 8×11
Frequency class 31.2
Period 2
Mod 2
Heat 2
Volatility 0.09
Strict volatility 0.09
Rotor type Diagonal on-off
Discovered by Unknown
Year of discovery Unknown
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20P2 is a period-2 oscillator composed of a beacon stabilizing an unnamed induction coil (a weld of a dock and a mango).


20P2 is about the thirty-fourth most common naturally-occurring oscillator in Achim Flammenkamp's census, being slightly less common than the cis-beacon on cap and the 1 beacon but more common than the cis-beacon down on long hook.[1] It is currently the most common unnamed oscillator.


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

External links

  • 21P2.1593 at Heinrich Koenig's Game of Life Object Catalogs