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258P3 image
Pattern type Oscillator
Number of cells 258
Bounding box 28×27
Period 3
Mod 3
Heat 130.7
Volatility 0.54
Strict volatility 0.54
Discovered by Noam Elkies
Year of discovery 1997

258P3 is a period 3 oscillator discovered by Noam Elkies on June 25, 1997.[1] In generation 2 it provides an isolated domino spark which can be used in the creation of higher period oscillators, such as the first known period 33 oscillator, 258P3 on Achim's p11. A related but slightly smaller oscillator was found by Karel Suhajda on January 13, 2003.[2]

Image gallery

Generation 3 reveals the isolated domino spark.
A related domino sparker discovered by Karel Suhajda
Download RLE: click here


  1. Jason Summers' all-osc pattern collection.
  2. Jason Summers' all-osc pattern collection.

External links