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A286691 {0->010, 1->110}-transform of the Pell word, A171588. 3
0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

LINKS

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

EXAMPLE

As a word, A171588 = 001001000100100010010010001001000..., and replacing each 0 by 010 and each 1 by 110 gives 0100101100100101100100100101100100...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 0, 1}, 1 -> {0}}] &, {0}, 6] (* A171588 *)

w = StringJoin[Map[ToString, s]]

w1 = StringReplace[w, {"0" -> "010", "1"->"110"}]

st = ToCharacterCode[w1] - 48 ; (* A286691 *)

Flatten[Position[st, 0]];  (* A286692 *)

Flatten[Position[st, 1]];  (* A286693 *)

CROSSREFS

Cf. A171588, A286692, A286693.

Sequence in context: A083651 A111748 A282244 * A288462 A130198 A285411

Adjacent sequences:  A286688 A286689 A286690 * A286692 A286693 A286694

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 13 2017

STATUS

approved

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Last modified May 25 22:51 EDT 2022. Contains 354073 sequences. (Running on oeis4.)