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A288428 Positions of 1 in A288426; complement of A288427. 3
2, 6, 8, 9, 12, 13, 17, 18, 22, 24, 25, 26, 30, 32, 33, 36, 37, 38, 42, 44, 45, 48, 49, 53, 54, 55, 59, 61, 62, 65, 66, 70, 71, 75, 77, 78, 79, 80, 84, 86, 87, 90, 91, 95, 96, 100, 102, 103, 104, 108, 110, 111, 114, 115, 116, 117, 121, 123, 124, 127, 128 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Conjecture: a(n)/n->2.07..., 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" -> "0101", "10" -> "100"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[11]] - 48 (* A288426 *)
Flatten[Position[st, 0]] (* A288427 *)
Flatten[Position[st, 1]] (* A288428 *)
CROSSREFS
Sequence in context: A023714 A355274 A096507 * A050675 A262981 A336745
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 11 2017
STATUS
approved

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)