Sidewalk
Jump to navigation
Jump to search
| Sidewalk | |||||||||
| View static image | |||||||||
| Pattern type | Strict still life | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 14 | ||||||||
| Bounding box | 6 × 5 | ||||||||
| Frequency class | 23.6 | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
| |||||||||
| |||||||||
| |||||||||
| |||||||||
Sidewalk (or pavement) is a 14-cell still life made up of two islands that are by themselves referred to as sides. An individual side can occasionally be useful as an induction coil.
A side
Peter Raynham found a 4-glider synthesis for the still life in 1973, which is based on a head-to-head collision between two pi-heptominoes.[1]
| A sidewalk predecessor (click above to open LifeViewer) RLE: here Plaintext: here |
Occurrence
Sidewalk is the 150th most common still life on Adam P. Goucher's Catagolue, being less common than O quad-loaf but more common than xs14_2egu156. Among all still lifes with 14 cells, it is the 22nd most common, being less common than beehive with hooked nine but more common than xs14_2egu156.[2]
It is the thirty-sixth most common object on Catagolue in the symmetry the object has (C2_2).
See also
References
- ↑ Robert Wainwright (June 1973). Lifeline, vol 10, page 2.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on May 29, 2023.
External links
- Sidewalk at the Life Lexicon
- Side at the Life Lexicon
- Sidewalk at Adam P. Goucher's Catagolue
- The 619 fourteen-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 14/14-507.rle)
- 14.43 at Heinrich Koenig's Game of Life Object Catalogs