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A288740
Positions of 1 in A288736; complement of A288737.
3
2, 3, 8, 9, 11, 12, 14, 15, 20, 21, 26, 27, 29, 30, 32, 33, 35, 36, 38, 39, 44, 45, 50, 51, 53, 54, 56, 57, 62, 63, 68, 69, 71, 72, 74, 75, 77, 78, 80, 81, 83, 84, 86, 87, 92, 93, 98, 99, 101, 102, 104, 105, 110, 111, 116, 117, 119, 120, 122, 123, 125, 126
OFFSET
1,1
COMMENTS
Conjecture: a(n)/n -> 2, and -2/3 < 2 - a(n)/n) < 1/2 for n >= 1.
LINKS
MATHEMATICA
s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
w[n_] := StringReplace[w[n - 1], {"00" -> "1000", "10" -> "01"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[22]] - 48 (* A288736 *)
Flatten[Position[st, 0]] (* A288737 *)
Flatten[Position[st, 1]] (* A288740 *)
CROSSREFS
Sequence in context: A272830 A028821 A337261 * A290150 A237037 A283618
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 16 2017
STATUS
approved