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A286808 Positions of 0 in A286807; complement of A286809. 3
1, 2, 5, 8, 10, 12, 15, 17, 19, 21, 23, 25, 27, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 124, 126, 128 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: a(n)/n-> 2, and -1 < 2 - a(n)/n < 2 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" -> "001", "1" -> "101"}]

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

st = ToCharacterCode[w[11]] - 48   (* A286807 *)

Flatten[Position[st, 0]]  (* A286808 *)

Flatten[Position[st, 1]]  (* A286809 *)

CROSSREFS

Cf. A286807, A286809.

Sequence in context: A290578 A294127 A166955 * A121294 A039770 A236019

Adjacent sequences:  A286805 A286806 A286807 * A286809 A286810 A286811

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 06 2017

STATUS

approved

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Last modified January 22 16:36 EST 2018. Contains 298055 sequences.