p40 B-heptomino shuttle

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p40 B-heptomino shuttle
x = 26, y = 23, rule = B3/S23 b2o20b2o$o2bo19b2o$o$o$ob2o20b2o$2b2o18bob2o$22bo$22bo$b2o13b2o4bo2bo$ b2o12bo2bo4b2o$15bo2bo$14b2ob2o$15b2o2$7bo10bo$6bobo8bobo$7bo4b2o4bo$ 10bo4bo$10bo4bo$10bo4bo$11bo2bo$9bobo2bobo$9b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 40 GPS 8 THUMBSIZE 2 ]]
Pattern type Oscillator
Oscillator type Shuttle
Number of cells 68
Bounding box 28×23
Period 40
Mod 20
Heat 44.2
Volatility 0.88
Strict volatility 0.45
Discovered by David Buckingham
Year of discovery Unknown

P40 B-heptomino shuttle is a period-40 shuttle oscillator found by David Buckingham sometime before May 1991,[1] being the first period 40 oscillator to be discovered.[note 1] It consists of two blockers, two tubs, and a fumarole hassling a B-heptomino.

Image gallery

Generation 17 reveals that the object being hassled is a B-heptomino.

See also


  1. A period-40 oscillator, octagon II on figure eight, can be constructed from two sparkers (octagon II and figure eight) both of which were definitely known by 1971. However, this type of oscillator is generally considered "boring", and thus not counted despite technically being non-trivial.


External links

  • 68P40.1 at Heinrich Koenig's Game of Life Object Catalogs