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A285134 Positions of 0 in A285133; complement of A285135. 3
1, 2, 3, 6, 7, 8, 9, 12, 13, 14, 15, 18, 20, 22, 24, 25, 26, 27, 30, 32, 34, 35, 36, 37, 39, 40, 41, 44, 45, 46, 47, 50, 51, 52, 53, 56, 57, 58, 59, 62, 64, 66, 68, 69, 70, 71, 74, 76, 78, 79, 80, 81, 83, 84, 85, 88, 89, 90, 91, 94, 95, 96, 97, 100, 101, 102 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: -1 < n*r - a(n) < 1 for n>=1, where r = 1 + sqrt(1/3).

LINKS

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

EXAMPLE

As a word, A285133 = 000110..., in which 0 is in positions 1,2,3,6,7,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 0, 0, 1}}] &, {0}, 12]; (* A285133 *)

Flatten[Position[s, 0]];  (* A285134 *)

Flatten[Position[s, 1]];  (* A285135 *)

CROSSREFS

Cf. A285133, A285135, A285136.

Sequence in context: A047246 A039029 A037460 * A161824 A102806 A275884

Adjacent sequences:  A285131 A285132 A285133 * A285135 A285136 A285137

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 20 2017

STATUS

approved

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Last modified April 14 12:11 EDT 2021. Contains 342949 sequences. (Running on oeis4.)