Elkies' p5

Elkies' p5 is a period-5 oscillator that was found by Noam Elkies in 1997.

Elkies' p5
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Pattern type Oscillator
Number of cells 20
Bounding box 9×8
Frequency class 43.0
Period 5
Mod 5
Heat 6.8
Volatility 0.55
Strict volatility 0.55
Discovered by Noam Elkies
Year of discovery 1997

Elkies' p5 first occurred naturally in a soup found by Dave Greene using Adam P. Goucher's apgsearch program in April 2015.[1] Other efforts from apgsearch allowed a 15-glider synthesis of an 18-cell still life which can be converted to Elkies' p5. This 20-glider synthesis was completed by Brett Berger and Martin Grant.[2] This was further improved to 8 gliders by Brett Berger and Martin Grant[3] following a second natural occurrence in January 2016.[4]

Commonness

On Catagolue, it is the third most common period 5 oscillator, after octagon II and fumarole.[5]

gollark: Sounds unethical.
gollark: Well, that too.
gollark: Black body radiation.
gollark: Most people do.
gollark: ... yes?

See also

References
  1. Adam P. Goucher (April 9, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  2. Martin Grant (April 25, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Brett Berger (January 5, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. gameoflifeboy (January 5, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  5. Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.
  • 20P5.11 at Heinrich Koenig's Game of Life Object Catalogs
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