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A288602 Positions of 1 in A288600; complement of A288601. 3
2, 5, 7, 10, 11, 14, 16, 17, 20, 22, 25, 26, 27, 30, 32, 35, 36, 39, 41, 42, 43, 46, 48, 51, 52, 55, 57, 58, 61, 63, 66, 67, 68, 69, 72, 74, 77, 78, 81, 83, 84, 87, 89, 92, 93, 94, 97, 99, 102, 103, 106, 108, 109, 110, 111, 114, 116, 119, 120, 123, 125, 126 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  a(n)/n->2, and -1/2 < 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" -> "0101", "1" -> "1001"}]

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

st = ToCharacterCode[w[11]] - 48   (* A288600 *)

Flatten[Position[st, 0]]  (* A288601 *)

Flatten[Position[st, 1]]  (* A288602 *)

CROSSREFS

Cf. A288600, A288601.

Sequence in context: A067934 A284470 A112730 * A049842 A018636 A068007

Adjacent sequences:  A288599 A288600 A288601 * A288603 A288604 A288605

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 14 2017

STATUS

approved

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Last modified November 26 17:52 EST 2021. Contains 349343 sequences. (Running on oeis4.)