p49 bouncer loop
(Redirected from P49 glider shuttle)
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| p49 bouncer loop | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Oscillator type | Relay | ||||||||
| Number of cells | 440 | ||||||||
| Bounding box | 65 × 65 | ||||||||
| Period | 49 (mod: 49) | ||||||||
| Heat | 84.6 | ||||||||
| Volatility | 0.58 | 0.41 | ||||||||
| Kinetic symmetry | .c | ||||||||
| Discovered by | Noam Elkies | ||||||||
| Year of discovery | 1999 | ||||||||
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The p49 bouncer loop is a period-49 oscillator discovered in its original form by Noam Elkies on August 1, 1999,[1] and was the first period 49 oscillator to be found,[2] though variations allow all periods of the form 28+7*n.
It consists of four p7 bouncers reflecting four gliders around a period-49 track. On January 24, 2003, Karel Suhajda found a slightly smaller p7 pipsquirter, giving a 400-cell variant of the oscillator. Suhajda's variant was the smallest known period-49 oscillator until the discovery of Snark-based adjustable glider loops in 2013.
| 400-cell variant found by Karel Suhajda on January 24, 2003 (click above to open LifeViewer) Catagolue: here |
| 370-cell 53 × 49 variant using a stator variant[3] of a smaller p7 pipsquirter found by Dongook Lee on November 20, 2019[4] (click above to open LifeViewer) Catagolue: here |
References
- ↑ "Game of Life Status page". Retrieved on April 9, 2009.
- ↑ Jason Summers' jslife pattern collection. Retrieved on April 9, 2009.
- ↑ BlinkerSpawn (November 22, 2019). Re: Oscillator Discussion Thread, 69 cells in 16 × 20
- ↑ Scorbie (November 20, 2019). Re: Oscillator Discussion Thread, 77 cells in 14 × 20
External links
- p49 bouncer loop at Adam P. Goucher's Catagolue (extended)
Categories:
- Patterns
- Oscillators with between 400 and 499 cells
- Periodic objects with minimum population between 400 and 499
- Patterns with between 400 and 499 cells
- Patterns found by Noam Elkies
- Patterns found in 1999
- Oscillators
- Relays
- Oscillators with period 49
- Oscillators with mod 49
- Oscillators with heat 84
- Oscillators with volatility 0.58
- Oscillators with strict volatility 0.41
- Oscillators with .c symmetry