Pentadecathlon on snacker
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| Pentadecathlon on snacker | |||||||||||
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| Pattern type | Oscillator | ||||||||||
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| Number of cells | 52 | ||||||||||
| Bounding box | 20 × 20 | ||||||||||
| Period | 45 (mod: 45) | ||||||||||
| Heat | 48.7 | ||||||||||
| Volatility | 0.87 | 0.01 | ||||||||||
| Kinetic symmetry | Unspecified | ||||||||||
| Discovered by | Unknown | ||||||||||
| Year of discovery | Unknown | ||||||||||
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Pentadecathlon on snacker is a period-45 oscillator composed of a pentadecathlon and a snacker. Although it is composed of two oscillators of smaller periods (15 and 9 respectively), it is considered to be non-trivial, because it has two cells that oscillate at the full period. It was the first non-trivial period 45 oscillator to be discovered and was discovered sometime before August 1995. In terms of its 52 cells, it is the second smallest known non-trivial period 45 oscillator, after pentadecathlon on thumb 1 with 48 cells.
On March 4, 2022, a variant of this oscillator appeared in a D4_+2-symmetric soup found using Charity Engine, making it the first p45 oscillator to appear semi-naturally.[1]
Gallery
 Generation 5 reveals the two cells that oscillate at the full period (in green). |
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See also
References
- ↑ catglue (March 4, 2022). Message in #cgol on the Conwaylife Lounge Discord server
External links
Categories:
- Patterns
- Oscillators with 52 cells
- Periodic objects with minimum population 52
- Patterns with 52 cells
- Patterns that can be constructed with 23 gliders
- Outer-totalistically endemic patterns
- Oscillators
- Oscillators with period 45
- Oscillators with mod 45
- Oscillators with heat 48
- Oscillators with volatility 0.87
- Oscillators with strict volatility 0.01
- Least-common-multiple oscillators