Bi-block

The bi-block is a common formation of two blocks and the smallest and most common[1] pseudo still life. Similar pseudo still lifes can be formed by considering any rectangular array of blocks, some of which are shown below.

Bi-block
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View static image
Pattern type Pseudo still life
Number of cells 8
Bounding box 5×2
Discovered by Unknown
Year of discovery Unknown
A tri-block
RLE: here
A 2×3 group of blocks
RLE: here
gollark: Don't question it.
gollark: It's just the Cloud\™.
gollark: The cloud.
gollark: I assume the brain is somehow isolated from this enough that swimming in very salty water will not make your brain implode.
gollark: Plasmolysis?

References
  1. "Census Results in Conway's Game of Life". Online Life-Like CA Soup Search. Retrieved on July 12, 2009.
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