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A288674 Positions of 0 in A288673; complement of A288675. 3
1, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 36, 37, 38, 39, 40, 41, 44, 45, 46, 47, 48, 49, 52, 53, 56, 57, 60, 61, 63, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 83, 84, 86, 87, 88 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture:  a(n)/n->1.41..., 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", "10" -> "000"}]

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

st = ToCharacterCode[w[14]] - 48   (* A288673 *)

Flatten[Position[st, 0]]  (* A288674 *)

Flatten[Position[st, 1]]  (* A288675 *)

CROSSREFS

Cf. A288673, A288675.

Sequence in context: A089399 A003619 A216846 * A183294 A039234 A025020

Adjacent sequences:  A288671 A288672 A288673 * A288675 A288676 A288677

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 15 2017

STATUS

approved

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Last modified October 16 06:14 EDT 2021. Contains 348040 sequences. (Running on oeis4.)