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A288667
Positions of 1 in A288665; complement of A288666.
3
6, 7, 14, 15, 18, 19, 22, 23, 26, 35, 36, 43, 44, 47, 48, 51, 52, 55, 60, 61, 64, 65, 68, 73, 74, 77, 78, 81, 86, 91, 100, 101, 108, 109, 116, 117, 120, 121, 124, 125, 128, 137, 138, 145, 146, 149, 150, 153, 154, 157, 162, 163, 166, 167, 170, 175, 176, 179
OFFSET
1,1
COMMENTS
Conjecture: a(n)/n->3.93..., and if m denotes this number, then -3 < 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" -> "0110", "10" -> "000"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[9]] - 48 (* A288665 *)
Flatten[Position[st, 0]] (* A288666 *)
Flatten[Position[st, 1]] (* A288667 *)
CROSSREFS
Sequence in context: A041999 A041319 A042315 * A319487 A283772 A080402
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 15 2017
STATUS
approved