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1, 2, 8, 13, 17, 18, 19, 20, 30, 39, 47, 54, 60, 65, 69, 70, 71, 72, 77, 91, 104, 116, 127, 137, 146, 154, 161, 167, 172, 176, 177, 178, 180, 181, 182, 199, 217, 234, 250, 265, 279, 292, 304, 315, 325, 334, 342, 349, 355, 360, 364, 365, 366, 368, 369, 370
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
w[n_] := StringReplace[w[n - 1], {"00" -> "1000", "10" -> "011"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[50]] - 48 (* A288226 *)
Flatten[Position[st, 0]] (* A288227 *)
Flatten[Position[st, 1]] (* A288228 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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