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A287519
Positions of 0 in A287457; complement of A287186.
4
2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 43, 44, 45, 47, 48, 49, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 65, 66, 67, 69, 70, 71, 73, 74, 75, 76, 77, 78, 80
OFFSET
1,1
COMMENTS
Conjecture: a(n)/n -> 1.20..., and if m denotes this number, then -1 < m - a(n)/n) < 1 for n >= 1.
LINKS
MATHEMATICA
s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
w[n_] := StringReplace[w[n - 1], {"00" -> "1000", "10" -> "000"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[23]] - 48 (* A287457 *)
Flatten[Position[st, 0]] (* A287519 *)
Flatten[Position[st, 1]] (* A287186 *)
CROSSREFS
Sequence in context: A004745 A158037 A332109 * A307646 A246786 A095949
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 17 2017
STATUS
approved