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A285256 Positions of 0 in A285255; complement of A285257. 3
1, 4, 6, 8, 9, 12, 13, 16, 18, 20, 21, 24, 25, 28, 30, 31, 34, 36, 38, 39, 42, 43, 46, 48, 49, 52, 54, 56, 57, 60, 61, 64, 66, 67, 70, 72, 73, 76, 78, 80, 81, 84, 85, 88, 90, 92, 93, 96, 97, 100, 102, 103, 106, 108, 109, 112, 114, 116, 117, 120, 121, 124 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: 2n - a(n) is in {0,1} for n>=1.

LINKS

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

EXAMPLE

As a word, A285255 = 011010..., in which 0 is in positions 1,4,6,8,9,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 1, 1, 0}}] &, {0}, 12]; (* A285255 *)

Flatten[Position[s, 0]];  (* A285256 *)

Flatten[Position[s, 1]];  (* A285257 *)

CROSSREFS

Cf. A285255, A285257, A285258.

Sequence in context: A163520 A273546 A176539 * A013920 A179891 A064590

Adjacent sequences:  A285253 A285254 A285255 * A285257 A285258 A285259

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 23 2017

STATUS

approved

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Last modified March 23 11:10 EDT 2019. Contains 321424 sequences. (Running on oeis4.)