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2, 3, 6, 8, 9, 12, 13, 16, 18, 19, 22, 24, 25, 28, 29, 32, 34, 35, 38, 39, 42, 44, 45, 48, 50, 51, 54, 55, 58, 60, 61, 64, 66, 67, 70, 71, 74, 76, 77, 80, 81, 84, 86, 87, 90, 92, 93, 96, 97, 100, 102, 103, 106, 107, 110, 112, 113, 116, 118, 119, 122, 123
(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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FORMULA
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a(n) = 2n - A003849(n-1) for n >= 1.
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MATHEMATICA
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s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0}}] &, {0}, 10] (*A003849*)
w = StringJoin[Map[ToString, s]]
w1 = StringReplace[w, {"0" -> "01", "1" -> "10"}] (*Thue-Morse transform*)
st = ToCharacterCode[w1] - 48 (*A287657*)
Flatten[Position[st, 0]] (*A287658*)
Flatten[Position[st, 1]] (*A287659*)
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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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