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A327985
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Positions of zeros in A051023, the middle column of rule-30 1-D cellular automaton, when started from a lone 1 cell.
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5
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2, 6, 7, 10, 11, 12, 14, 17, 18, 20, 21, 25, 27, 31, 32, 36, 38, 40, 43, 44, 45, 46, 49, 50, 52, 54, 57, 59, 61, 68, 69, 70, 71, 76, 77, 78, 80, 82, 86, 87, 88, 89, 90, 92, 93, 95, 98, 99, 100, 104, 105, 106, 109, 112, 115, 117, 118, 119, 120, 121, 122, 123, 125, 126, 127, 133, 137, 139, 140, 144, 145, 146, 150, 152, 156
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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A327985list[upto_]:=Flatten[Position[CellularAutomaton[30, {{1}, 0}, {upto, {{0}}}], 0]]-1; A327985list[200] (* Paolo Xausa, Jun 28 2023 *)
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PROG
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(PARI)
(PARI) A327985write(up_to) = { my(s=1, n=0, k=0); while(k<up_to, if(!((s>>n)%2), k++; write("b327985.txt", k, " ", n)); s = A269160(s); n++); (n); }; \\ For fast creation of b-files.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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