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A288731 Positions of 1 in A288729; complement of A288730. 3
3, 4, 6, 7, 13, 14, 16, 17, 19, 20, 22, 23, 29, 30, 32, 33, 39, 40, 42, 43, 45, 46, 48, 49, 51, 52, 54, 55, 61, 62, 64, 65, 71, 72, 74, 75, 77, 78, 80, 81, 87, 88, 90, 91, 97, 98, 100, 101, 103, 104, 106, 107, 109, 110, 112, 113, 115, 116, 118, 119, 125, 126 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  a(n)/n-> 2, and  0 < 2 - a(n)/n) < 1/4 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[9]] - 48   (* A288729 *)

Flatten[Position[st, 0]]  (* A288730 *)

Flatten[Position[st, 1]]  (* A288731 *)

CROSSREFS

Cf. A288729, A288730.

Sequence in context: A002982 A290432 A276783 * A093707 A058639 A253888

Adjacent sequences:  A288728 A288729 A288730 * A288732 A288733 A288734

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 16 2017

STATUS

approved

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Last modified March 18 13:47 EDT 2019. Contains 321289 sequences. (Running on oeis4.)