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A286923 Positions of 0 in A286922; complement of A286924. 3
3, 7, 12, 16, 21, 25, 29, 34, 38, 43, 47, 51, 56, 60, 65, 69, 74, 78, 82, 87, 91, 96, 100, 104, 109, 113, 118, 122, 127, 131, 135, 140, 144, 149, 153, 157, 162, 166, 171, 175, 179, 184, 188, 193, 197, 202, 206, 210, 215, 219, 224, 228, 232, 237, 241, 246 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) - a(n-1) is in {4,5} for n>=2, and a(n)/n -> 3 + sqrt(2).

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

EXAMPLE

As a word, A286922 = 1101110111101110111101110..., in which 0 is in positions 3,7,12,16....

MATHEMATICA

s = Nest[Flatten[# /. {0 -> 1, 1 -> {1, 1, 0}}] &, {1}, 7] (* A080764 *)

w = StringJoin[Map[ToString, s]]

w1 = StringReplace[w, {"0" -> "01"}]

st = ToCharacterCode[w1] - 48 ; (* A286922 *)

Flatten[Position[st, 0]];  (* A286923 *)

Flatten[Position[st, 1]];  (* A286924 *)

CROSSREFS

Cf. A080764, A286922, A286924.

Sequence in context: A310241 A310242 A310243 * A184917 A084582 A072098

Adjacent sequences:  A286920 A286921 A286922 * A286924 A286925 A286926

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 17 2017

STATUS

approved

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Last modified May 21 23:21 EDT 2019. Contains 323467 sequences. (Running on oeis4.)