258P3 on Achim's p11

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258P3 on Achim's p11
258P3 on Achim's p11 image
Pattern type Oscillator
Number of cells 330
Bounding box 49×31
Period 33
Mod 33
Heat 199.1
Volatility 0.69
Strict volatility 0.002
Discovered by Noam Elkies
Year of discovery 1997

258P3 on Achim's p11 is a period 33 oscillator composed of 258P3 and Achim's p11. Although it is composed of two oscillators of smaller periods (3 and 11 respectively), it is considered non-trivial because it contains a single cell that is alive in generation 21 and dead in the other 32 phases of the oscillator. It was discovered by Noam Elkies on June 25, 1997 and was the first period 33 oscillator to be found.[1]

Image gallery

Generation 21 reveals the single cell that oscillates at the full period (in green).

See also


  1. Jason Summers' all-osc pattern collection.

External links