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A288308 Positions of 1 in A288306; complement of A288307. 3
3, 5, 6, 9, 10, 12, 13, 17, 19, 20, 22, 23, 26, 27, 29, 30, 34, 37, 38, 41, 42, 44, 45, 48, 49, 51, 52, 56, 58, 59, 61, 62, 65, 66, 68, 69, 73, 76, 77, 81, 83, 84, 86, 87, 91, 93, 94, 96, 97, 100, 101, 103, 104, 108, 110, 111, 113, 114, 117, 118, 120, 121 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  -1 < 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" -> "0010", "1" -> "110"}]

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

st = ToCharacterCode[w[11]] - 48   (* A288306 *)

Flatten[Position[st, 0]]  (* A288307 *)

Flatten[Position[st, 1]]  (* A288308 *)

CROSSREFS

Cf. A288306, A288307.

Sequence in context: A304434 A334133 A286061 * A187574 A187833 A081121

Adjacent sequences:  A288305 A288306 A288307 * A288309 A288310 A288311

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 09 2017

STATUS

approved

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Last modified May 6 17:27 EDT 2021. Contains 343586 sequences. (Running on oeis4.)