Puffer 2

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Puffer 2
x = 18, y = 5, rule = B3/S23 b3o11b3o$o2bo10bo2bo$3bo4b3o6bo$3bo4bo2bo5bo$2bo4bo8bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 20 AUTOSTART OFF ]]
Pattern type Puffer
Number of cells 22
Bounding box 18×5
Direction Orthogonal
Period 140
Speed c/2
Discovered by Bill Gosper
Year of discovery Unknown

Puffer 2 was the second puffer to be found and was discovered by Bill Gosper. It is extremely dirty and its tail does not stabilize until generation 5533, after which it stays at period 140. It consists of a B-heptomino (shown here one generation before its standard form) escorted by two lightweight spaceships. Its debris can be stabilized by a third lightweight spaceship as in ecologist. A pulsar is formed at the south-western side in generation 4957.

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