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A288475 Positions of 1 in A288473; complement of A288474. 3
2, 4, 6, 7, 9, 10, 12, 14, 16, 17, 19, 20, 22, 24, 26, 27, 29, 30, 33, 34, 36, 37, 39, 41, 43, 44, 46, 47, 50, 51, 53, 54, 56, 58, 60, 61, 63, 64, 66, 68, 70, 71, 73, 74, 76, 78, 80, 81, 83, 84, 87, 88, 90, 91, 93, 95, 97, 98, 100, 101, 104, 105, 107, 108 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  a(n)/n -> 1.74..., 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" -> "0101", "1" -> "011"}]

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

st = ToCharacterCode[w[11]] - 48   (* A288473 *)

Flatten[Position[st, 0]]  (* A288474 *)

Flatten[Position[st, 1]]  (* A288475 *)

Table[StringLength[w[n]], {n, 1, 35}] (* A288476 conjectured *)

CROSSREFS

Cf. A288473, A288474, A288476.

Sequence in context: A189518 A213733 A218608 * A080711 A022301 A050099

Adjacent sequences:  A288472 A288473 A288474 * A288476 A288477 A288478

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 11 2017

STATUS

approved

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Last modified April 11 18:00 EDT 2021. Contains 342888 sequences. (Running on oeis4.)