Pentoad: Difference between revisions
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|[[Image:Pentoad2.png|framed|left|The pentoad with two Z-hexominoes.]] | |[[Image:Pentoad2.png|framed|left|The pentoad with two Z-hexominoes.]] | ||
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==See also== | |||
*[[Toad]] | |||
==External links== | ==External links== | ||
*[http://www.argentum.freeserve.co.uk/lex_p.htm#pentoad Pentoad] at the Life Lexicon | *[http://www.argentum.freeserve.co.uk/lex_p.htm#pentoad Pentoad] at the Life Lexicon | ||
Revision as of 19:37, 28 February 2009
| Pentoad | |||||||
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| Pattern type | Oscillator | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 20 | ||||||
| Bounding box | 13 × 12 | ||||||
| Period | 5 (mod: Unknown) | ||||||
| Heat | 8.8 | ||||||
| Volatility | Unknown | Unknown | ||||||
| Kinetic symmetry | Unspecified | ||||||
| Discovered by | Bill Gosper | ||||||
| Year of discovery | 1977 | ||||||
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Pentoad is a period 5 oscillator that was found by Bill Gosper in June 1977. It consists of a Z-hexomino that is stabilized by two eater 1s.
It was discovered by Scott Kim that this oscillator is extensible by moving one of the eater diagonally away by four cells and inserting another Z-hexomino in the gap. The pentoad constructed in this way with n Z-hexominoes has 14 + 6n cells and heat 8.8 + 6.4n. The pentoad with two Z-hexominoes is shown below.
Image gallery
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See also
External links
- Pentoad at the Life Lexicon