Christmas tree created by Rule 30 cellular automata:
000000000000010000000000000
000000000000111000000000000
000000000001100100000000000
000000000011011110000000000
000000000110010001000000000
000000001101111011100000000
000000011001000010010000000
000000110111100111111000000
000001100100011100000100000
000011011110110010001110000
000110010000101111011001000

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@tobym
What is a rule 30 cellular automata? :morty:
Where and how did you create it?

@martin it's the simplest cellular automata definition, where each cell can have either one of two states (1 or 0) depending on the neighboring cells in previous state. Called Rule 30 because of the way Wolfram classified this stuff. Found this code here web.archive.org/web/2015081204 recently, though I've been fascinated by cellular automata for a while.

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