Swan
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| Swan | |||||||||
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| Pattern type | Spaceship | ||||||||
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| Number of cells | 49 | ||||||||
| Bounding box | 24 × 12 | ||||||||
| Direction | Diagonal | ||||||||
| Period | 4 (mod: 4) | ||||||||
| Speed | c/4 | c/4 | ||||||||
| Heat | 51.0 | ||||||||
| Kinetic symmetry | n | ||||||||
| Discovered by | Tim Coe | ||||||||
| Year of discovery | 1996 | ||||||||
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Swan is a c/4 diagonal spaceship found by Tim Coe in February 1996 that produces some useful sparks.
Uses
Two swans can pull a p8 swan tagalong to create the current smallest known period-8 c/4 diagonal spaceship.
A swan can also be combined non-trivially with a Canada goose.
On February 20, 1996 Noam Elkies noticed that it could be made into a small boatstretcher.[1] A version stretching a tub (instead of a boat as shown below) was called TIRETRAK.LIF in Alan Hensel's lifep pattern collection from the 1990s; this was at a time when PC-compatible computers running older versions of MS-DOS were still limited to eight-character filenames.
Gallery
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See also
References
- ↑ Tim Coe's c/4 diagonal sparkers at Paul Callahan's Page of Conway's Life Miscellany
External links
- Swan at the Life Lexicon
- Swan at Adam P. Goucher's Catagolue
- 49P4H1V1.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Spaceships with 49 cells
- Periodic objects with minimum population 49
- Patterns with 49 cells
- Patterns found by Tim Coe
- Patterns found in 1996
- Spaceships
- Spaceships with period 4
- Diagonal spaceships
- Spaceships with speed c/4
- Spaceships with unsimplified speed c/4
- Spaceships with heat 51
- Spaceships with mod 4
- Spaceships with n symmetry