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A288307 Positions of 0 in A288306; complement of A288308. 3
1, 2, 4, 7, 8, 11, 14, 15, 16, 18, 21, 24, 25, 28, 31, 32, 33, 35, 36, 39, 40, 43, 46, 47, 50, 53, 54, 55, 57, 60, 63, 64, 67, 70, 71, 72, 74, 75, 78, 79, 80, 82, 85, 88, 89, 90, 92, 95, 98, 99, 102, 105, 106, 107, 109, 112, 115, 116, 119, 122, 123, 124, 126 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture:  -1 < 2 - a(n)/n < 1 for n >= 1.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

MATHEMATICA

s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];

w[n_] := StringReplace[w[n - 1], {"00" -> "0010", "1" -> "110"}]

Table[w[n], {n, 0, 8}]

st = ToCharacterCode[w[11]] - 48   (* A288306 *)

Flatten[Position[st, 0]]  (* A288307 *)

Flatten[Position[st, 1]]  (* A288308 *)

CROSSREFS

Cf. A288306, A288308.

Sequence in context: A316326 A074204 A030355 * A286060 A080704 A316094

Adjacent sequences:  A288304 A288305 A288306 * A288308 A288309 A288310

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 09 2017

STATUS

approved

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Last modified May 6 17:27 EDT 2021. Contains 343586 sequences. (Running on oeis4.)