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A287380 Positions of 1 in A287931; complement of A287379. 3
3, 5, 8, 12, 14, 18, 21, 24, 28, 31, 35, 37, 41, 43, 47, 50, 54, 56, 60, 63, 66, 70, 73, 76, 80, 83, 87, 89, 93, 96, 99, 103, 106, 110, 112, 116, 118, 122, 125, 129, 131, 135, 137, 141, 144, 148, 150, 154, 157, 160, 164, 167, 171, 173, 177, 179, 183, 186 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: a(n)/n-> 3.24..., 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" -> "0010", "1" -> "10"}]

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

st = ToCharacterCode[w[11]] - 48   (* A287931 *)

Flatten[Position[st, 0]]  (* A287379 *)

Flatten[Position[st, 1]]  (* A287380 *)

CROSSREFS

Cf. A287931, A287380.

Sequence in context: A100464 A114891 A285953 * A339389 A218485 A310029

Adjacent sequences:  A287377 A287378 A287379 * A287381 A287382 A287383

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 07 2017

STATUS

approved

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Last modified May 14 07:13 EDT 2021. Contains 343879 sequences. (Running on oeis4.)