Still with a threshold of 5 cells in the next state to advance, but the neighbourhood is a disc of radius 7 cells, and it eventually ends up a bit "80s".
('Sky's shitty compression really massacres the early iterations. Looks 'orrible.)
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Does it help if they move?
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If one lets them run for 2000 iterations, they resemble the images in Griffeath's chapter in the book. (Read the book.)