R2D2
R2D2 is a period-8 oscillator that was found in the form shown in the infobox at right, but not named, by Peter Raynham in the early 1970s. The name derives from a form with a larger and less symmetric stator discovered later by Noam Elkies in August 1994, shown below.[1]
![](../I/m/R2d2alternatestator.png)
Elkies' R2D2 stator from 1994 (which inspired the name)
R2D2 | |||||||||||
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Pattern type | Oscillator | ||||||||||
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Oscillator type | Billiard table | ||||||||||
Number of cells | 29 | ||||||||||
Bounding box | 11×10 | ||||||||||
Period | 8 | ||||||||||
Mod | 4 | ||||||||||
Heat | 2.0 | ||||||||||
Volatility | 0.22 | ||||||||||
Strict volatility | 0.22 | ||||||||||
Discovered by | Peter Raynham | ||||||||||
Year of discovery | Unknown | ||||||||||
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Goldtiger997 found a 86-glider synthesis for this oscillator on March 7, 2020.[2]
See also
References
- Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- Goldtiger997 (March 7, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
External links
- R2D2 at the Life Lexicon
- R2D2 at Adam P. Goucher's Catagolue
- 29P8.2 at Heinrich Koenig's Game of Life Object Catalogs
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