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2, 3, 5, 8, 9, 14, 20, 21, 23, 26, 27, 33, 34, 36, 41, 44, 45, 50, 56, 57, 59, 64, 67, 68, 74, 75, 77, 80, 81, 86, 92, 93, 95, 98, 99, 105, 106, 108, 113, 116, 117, 123, 124, 126, 129, 130, 135, 141, 142, 144, 149, 152, 153, 158, 164, 165, 167, 170, 171, 177
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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a(n) - a(n-1) is in {1,2,3,5,6} for n>=2. Conjecture: a(n)/n -> 3.
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LINKS
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EXAMPLE
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As a word, A286493 = 01101001100001000001..., in which 1 is in positions 2,3,5,8,9,14,...
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MATHEMATICA
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s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 9] (* A010060 *)
w = StringJoin[Map[ToString, s]]
w1 = StringReplace[w, {"1011" -> "0"}]
st = ToCharacterCode[w1] - 48 (* A286493 *)
Flatten[Position[st, 0]] (* A286494 *)
Flatten[Position[st, 1]] (* A286495 *)
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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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