Four blinkers around four blocks
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| Four blinkers around four blocks | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 24 | ||||||||
| Bounding box | 10 × 10 | ||||||||
| Period | 6 (mod: 6) | ||||||||
| Heat | 26.7 | ||||||||
| Volatility | 0.94 | 0.89 | ||||||||
| Kinetic symmetry | rk | ||||||||
| Discovered by | Achim Flammenkamp | ||||||||
| Year of discovery | 1994 | ||||||||
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Four blinkers around four blocks is a period-6 oscillator which, in one generation, resembles four rotationally symmetric copies of a pre-block and blinker, hence its name. It is the fifth smallest true-period-6 oscillator, after the unix, blonker, an unnamed glide-symmetric oscillator, and the p6 shuttle. It was found by Achim Flammenkamp on July 26, 1994.[1]
Approximately 1 in 91,800 even fourfold rotationally symmetric soups (C4_4) form this oscillator.
Glider synthesis
A 12-glider synthesis for this oscillator was found by Jason Summers in August 2004.[2] Another 16-glider recipe was found by Emerson J. Perkins and Dave Greene five years later.[3]
See also
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 7, 2022.
- ↑ make-osc-p5-plus.rle from Jason Summers' pattern collections.
- ↑ Dave Greene (August 1, 2009). Re: The Online Life-Like CA Soup Search (discussion thread) at the ConwayLife.com forums
External links
- Four blinkers around four blocks at Adam P. Goucher's Catagolue
- The 186 24-bit period 6 oscillators at Mark D. Niemiec's Life Page
- 24P6.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 24 cells
- Periodic objects with minimum population 24
- Patterns with 24 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Patterns that can be constructed with 12 gliders
- Oscillators
- Oscillators with period 6
- Oscillators with mod 6
- Oscillators with heat 26
- Oscillators with volatility 0.94
- Oscillators with strict volatility 0.89
- Oscillators with rk symmetry