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A286987 {111->1}-transform of the Sturmian word A080764. 3
1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

COMMENTS

A080764 = 1101101110110111011011011101..., and replacing each 111 by 1 gives

1101101011010110110101101011011010..., in which the positions of 0 are given by A286988, and of 1, by A286989.

LINKS

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

MATHEMATICA

s = Nest[Flatten[# /. {0 -> 1, 1 -> {1, 1, 0}}] &, {1}, 11]; (* Sturmian word A080764 *)

w = StringJoin[Map[ToString, s]];

w1 = StringReplace[w, {"111" -> "1"}]

st = ToCharacterCode[w1] - 48 ; (* A286987 *)

Flatten[Position[st, 0]];  (* A286988 *)

Flatten[Position[st, 1]];  (* A286989 *)

CROSSREFS

Cf. A080764, A286988, A286989.

Sequence in context: A014471 A230002 A071028 * A011635 A015752 A015878

Adjacent sequences:  A286984 A286985 A286986 * A286988 A286989 A286990

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 18 2017

STATUS

approved

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Last modified March 23 14:17 EDT 2019. Contains 321431 sequences. (Running on oeis4.)