p56 B-heptomino shuttle
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| p56 B-heptomino shuttle | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Oscillator type | Shuttle | ||||||||
| Number of cells | 45 | ||||||||
| Bounding box | 28 × 21 | ||||||||
| Period | 56 (mod: 28) | ||||||||
| Heat | 30.3 | ||||||||
| Volatility | 0.94 | 0.57 | ||||||||
| Kinetic symmetry | n.e | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | Unknown | ||||||||
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P56 B-heptomino shuttle is a period-56 oscillator discovered in its original form (shown below) by David Buckingham sometime before May 1991,[1] being the first period 56 oscillator to be found.[note 1] It consists of a B-heptomino being hassled by two blockers and two blocks. In terms of its 45 cells, it is the smallest known period 56 oscillator.[2] The blockers interact with the B twice, once to supress the block, and another time to prevent the formation of a Herschel.
Image gallery
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Generation 8 reveals that the object being hassled is a B-heptomino
| The original form of this oscillator using Kok's galaxies instead of blockers (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
See also
Notes
- ↑ A nontrivial period-56 oscillator, such as Kok's galaxy on 44P7.2, could have been constructed from two oscillators of lower period (such as p7 and p8), both of which were known by an earlier date. However, no such LCM oscillators were attested prior to the discovery of this oscillator on or before 1991.
References
- ↑ Dean Hickerson's oscillator stamp collection.
- ↑ Jason Summers' all-osc oscillators collection
External links
- 45P56.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 45 cells
- Periodic objects with minimum population 45
- Patterns with 45 cells
- Patterns found by David Buckingham
- Patterns that can be constructed with 15 gliders
- Oscillators
- Shuttles
- Oscillators with period 56
- Oscillators with mod 28
- Oscillators with heat 30
- Oscillators with volatility 0.94
- Oscillators with strict volatility 0.57
- Oscillators with n.e symmetry