p56 B-heptomino shuttle
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.
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 | ||||||||||
Strict volatility | 0.57 | ||||||||||
Discovered by | David Buckingham | ||||||||||
Year of discovery | Unknown | ||||||||||
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Image gallery
![]() Generation 8 reveals that the object being hassled is a B-heptomino. |
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gollark: .geese undergoing electromagnetism
See also
Notes
- A period-56 oscillator, Kok's galaxy on 44P7.2, can be constructed from two sparkers (Kok's galaxy and 44P7.2) both of which were definitely known by 1977. However, this type of oscillator is generally considered "boring", and thus not counted despite technically being non-trivial.
References
- Dean Hickerson's oscillator stamp collection.
- Jason Summers' all-osc oscillators collection
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