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A288623 Positions of 0 in A288622; complement of A288624. 3
1, 2, 4, 6, 9, 10, 12, 15, 16, 18, 21, 22, 24, 25, 27, 28, 30, 32, 35, 36, 38, 41, 42, 44, 45, 47, 48, 50, 52, 55, 56, 58, 61, 62, 64, 65, 67, 68, 70, 72, 75, 76, 78, 79, 81, 83, 86, 87, 89, 90, 92, 94, 97, 98, 100, 103, 104, 106, 109, 110, 112, 113, 115 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture:  a(n)/n->1.83..., and if m denotes this number, then -1 < m - 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" -> "0110", "1" -> "01"}]

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

st = ToCharacterCode[w[10]] - 48   (* A288622 *)

Flatten[Position[st, 0]]  (* A288623 *)

Flatten[Position[st, 1]]  (* A288624 *)

CROSSREFS

Cf. A288622, A288624.

Sequence in context: A156165 A024968 A047411 * A138972 A050110 A184416

Adjacent sequences:  A288620 A288621 A288622 * A288624 A288625 A288626

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 14 2017

STATUS

approved

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Last modified January 24 16:44 EST 2021. Contains 340411 sequences. (Running on oeis4.)