p85 R-pentomino hassler
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| p85 R-pentomino hassler | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 68 | ||||||||
| Bounding box | 52 × 29 | ||||||||
| Period | 85 | ||||||||
| Mod | 85 | ||||||||
| Heat | 71.72 | ||||||||
| Volatility | 0.94 | ||||||||
| Strict volatility | 0.85 | ||||||||
| Discovered by | Luke Kiernan David Raucci | ||||||||
| Year of discovery | 2022 | ||||||||
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p85 R-pentomino hassler is a period-85 oscillator found by Luke Kiernan and reduced to its current form by David Raucci on August 26, 2022.[1] In terms of its minimum population of 68 cells, it is the smallest known oscillator of this period, surpassing 74P85. It consists of two R-pentominoes being hassled by two blocks, two eater 1s, and two fumaroles.
A period-85 glider gun was found on August 31, 2022,[2] becoming the new smallest known gun with this period[3].
A 32-glider synthesis was completed by Carson Cheng shortly after discovery of the oscillator.[4] A 29-glider synthesis was completed by KtT on December 2, 2023.[5][6] On December 3, 2023, Chris857 lowered the cost to 28 gliders.[7][8]
References
- ↑ Ian07 (August 26, 2022). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ AbhpzTa (August 31, 2022). Re: Gun Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ A capped form of the older guntrue_85 with 3180-cell bounding box is available by this link.
- ↑ Carson Cheng (August 26, 2022). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ KtT (December 2, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#5666713810) (December 2, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ Chris857 (December 3, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#5670464395) (December 3, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
See also
External links
Categories:
- Patterns
- Oscillators with 68 cells
- Periodic objects with minimum population 68
- Patterns with 68 cells
- Patterns found by Luke Kiernan
- Patterns found by David Raucci
- Patterns found in 2022
- Patterns that can be constructed with 28 gliders
- Outer-totalistically endemic patterns
- Oscillators
- Oscillators with period 85
- Oscillators with mod 85
- Oscillators with heat 71
- Oscillators with volatility 0.94
- Oscillators with strict volatility 0.85
- R-pentomino hasslers
- Patterns with 180-degree rotation symmetry