R-turner
| R-turner | |||||||||
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| Pattern type | Methuselah | ||||||||
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| Number of cells | 8 | ||||||||
| Bounding box | 5 × 4 | ||||||||
| MCPS | 8 | ||||||||
| Lifespan | 268 generations | ||||||||
| Final population | 45 | ||||||||
| L/I | 33.5 | ||||||||
| F/I | 5.6 | ||||||||
| F/L | 0.168 | ||||||||
| L/MCPS | 33.5 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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The R-turner (not to be confused with the U-turner) is an evolutionary sequence in Conway's game of Life. It's name was proposed by hotdogPi[1].
Commonness
On Simon Ekström's list of common evolutionary sequences, the R-turner is less common than the U-turner and H' (generation 22 of the Herschel), but more common than the original diehard and the object hassled in Jason's p22. More specifically, it appears 28314 times on the list, with a relative frequency of 0.046.
Evolution
Initially, the R-turner moves like the Dove, not really favoring one direction of movement over another, with a blinker forming from an angel at generation 48. At generation 92 an R-pentomino and another angel forms, effectively making the "direction" of the R-turner's evolution turn around 180 degrees. the R-pentomino goes on, becoming a B-heptomino while it's debris is tamed by the blinker. it stabilizes at generation 268, leaving behind 3 blinkers, 5 blocks, 2 gliders, and a ship.
Images
References
- ↑ hotdogPi (July 2, 2021). Re: Thread For Your Naming Proposals of Unnamed Patterns (discussion thread) at the ConwayLife.com forums