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A288734 Positions of 0 in A288733; complement of A288735. 3
2, 3, 4, 6, 9, 12, 13, 14, 16, 17, 18, 20, 23, 26, 29, 32, 33, 34, 36, 37, 38, 40, 43, 46, 47, 48, 50, 51, 52, 54, 57, 60, 63, 66, 69, 72, 73, 74, 76, 77, 78, 80, 83, 86, 87, 88, 90, 91, 92, 94, 97, 100, 103, 106, 107, 108, 110, 111, 112, 114, 117, 120, 121 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  a(n)/n -> 2, and  0 < 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" -> "1000", "10" -> "01"}]

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

st = ToCharacterCode[w[21]] - 48   (* A288733 *)

Flatten[Position[st, 0]]  (* A288734 *)

Flatten[Position[st, 1]]  (* A288735 *)

CROSSREFS

Cf. A288733, A288735.

Sequence in context: A035947 A338914 A048249 * A332034 A332035 A318759

Adjacent sequences:  A288731 A288732 A288733 * A288735 A288736 A288737

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 16 2017

STATUS

approved

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Last modified April 20 02:38 EDT 2021. Contains 343118 sequences. (Running on oeis4.)