Boat with hooked nine
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| Boat with hooked nine | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 13 | ||||||||
| Bounding box | 7 × 5 | ||||||||
| Frequency class | 22.7 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Boat with hooked nine is a 13-cell still life.
This still life is named in analogy to boat with hooked tail; an alternate name, 13-boat wrap eater, is also used, but discouraged.
Construction
This still life can be constructed with 4 gliders.[1] Several known alternate syntheses can be found in Mark Niemiec's database.[2] A 4-glider synthesis was found in July 2017.[3]
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Occurrence
This is the 113rd most common still life on Adam P. Goucher's Catagolue, and the seventh most common still life with 13 cells.
There is a three-glider collision with this still life in the ash.[5]
See also
References
- ↑ xs13_31egma4 at Adam P. Goucher's Catagolue
- ↑ 2.0 2.1 The 240 thirteen-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 13/13-185.rle)
- ↑ 3.0 3.1 Simon Ekström (July 29, 2017). Re: 4 glider syntheses (discussion thread) at the ConwayLife.com forums
- ↑ xs13_31egma4 (archived copy)
- ↑ The final population is 376 with 12 escaping gliders. The headerless RLE of the collision is 68bo$66b2o$67b2o$63bo$64bo$62b3o41$bo$b2o$obo!
External links
- Boat with hooked nine at Adam P. Goucher's Catagolue
- The 240 thirteen-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 13/13-185.rle)
- 13.61 at Heinrich Koenig's Game of Life Object Catalogs