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A286922 {0->01}-transform of the Sturmian word A080764. 3
1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

COMMENTS

A080764 = 1101101110110111011011011101..., and replacing each 0 by 01 gives

11011101111011101111011101110111..., in which the positions of 0 are given by A286923, and of 1, by A286924.

LINKS

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

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, A286923, A286924.

Sequence in context: A105234 A285599 A284386 * A285668 A267813 A323000

Adjacent sequences:  A286919 A286920 A286921 * A286923 A286924 A286925

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 17 2017

STATUS

approved

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Last modified July 24 05:05 EDT 2021. Contains 346273 sequences. (Running on oeis4.)