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A263428
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Triangle read by rows giving successive states of cellular automaton generated by "Rule 3" initiated with a single ON (black) cell.
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5
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1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1
(list;
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listen;
history;
text;
internal format)
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OFFSET
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0
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COMMENTS
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Row n has length 2n+1.
This sequence is also generated by Rule 35.
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LINKS
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EXAMPLE
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The first ten rows:
1
1 0 0
0 0 0 1 0
1 1 1 1 0 0 1
0 0 0 0 0 0 1 0 0
1 1 1 1 1 1 1 0 0 1 1
0 0 0 0 0 0 0 0 0 1 0 0 0
1 1 1 1 1 1 1 1 1 1 0 0 1 1 1
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 1 1
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MATHEMATICA
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rule = 3; rows = 20; Flatten[Table[Take[CellularAutomaton[rule, {{1}, 0}, rows-1, {All, All}][[k]], {rows - k + 1, rows + k - 1}], {k, 1, rows}]]
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CROSSREFS
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KEYWORD
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nonn,tabf,easy
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AUTHOR
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STATUS
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approved
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