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22P36 image
Pattern type Oscillator
Number of cells 22
Bounding box 14×18
Period 36
Mod Unknown
Heat 19.2
Volatility 0.89
Strict volatility 0.89
Discovered by Noam Elkies
Year of discovery 1995
For the period 22 oscillator, see 36P22.

22P36 is an unnamed period 36 oscillator found by Noam Elkies on January 29, 1995.[1] It consists of a double hassling action, in which two colliding traffic lights (a traffic jam in fact) is first converted by eater 1s into a pair of blinkers and L-sparks. These produce then a pair of phi sparks, which are then hassled by the same eaters to produce T-tetrominoes, which re-evolve to traffic lights. In terms of its 22 cells it is the smallest period 36 oscillator.


  1. Dean Hickerson's oscillator stamp collection. Retrieved on June 16, 2009.

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