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1, 2, 4, 5, 8, 9, 11, 14, 15, 17, 18, 20, 23, 24, 26, 27, 29, 30, 34, 37, 38, 40, 41, 43, 44, 47, 48, 51, 55, 58, 59, 61, 62, 64, 65, 68, 69, 71, 74, 75, 77, 82, 86, 89, 90, 92, 93, 95, 96, 99, 100, 102, 105, 106, 108, 109, 111, 114, 115, 117, 118, 122, 127
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Conjecture: a(n)/n -> 2.37..., and if m denotes this number, then 0 < m - a(n)/n < 2 for n >= 1.
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LINKS
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MATHEMATICA
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z = 11; (* number of iterates *)
s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
w[n_] := StringReplace[w[n - 1], {"00" -> "0010", "01" -> "001", "10" -> "011"}]
TableForm[Table[w[n], {n, 0, 10}]]
st = ToCharacterCode[w[z]] - 48 (* A289007 *)
Flatten[Position[st, 0]] (* A289008 *)
Flatten[Position[st, 1]] (* A289009 *)
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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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