p56 Bheptomino shuttle
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p56 Bheptomino shuttle  
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Pattern type  Oscillator  

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  
 
 
 

P56 Bheptomino shuttle is a period56 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 Bheptomino 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.
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See also
Notes
 ↑ A period56 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 nontrivial.
References
 ↑ Dean Hickerson's oscillator stamp collection.
 ↑ Jason Summers' allosc oscillators collection
External links
 45P56.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 45 cells
 Patterns with 45 cells
 Patterns found by David Buckingham
 Patterns that can be constructed with 15 gliders
 Oscillators
 Periodic objects with minimum population 45
 Shuttles
 Oscillators with period 56
 Oscillators with mod 28
 Oscillators with heat 30
 Oscillators with volatility 0.94
 Oscillators with strict volatility 0.57
 Nonflipping oscillators that turn 180 degrees