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A284773 Positions of 0 in A284772; complement of A284774. 3
1, 3, 4, 6, 7, 9, 11, 12, 14, 15, 17, 19, 20, 22, 23, 25, 26, 28, 29, 31, 33, 34, 36, 37, 39, 41, 42, 44, 45, 47, 48, 50, 51, 53, 55, 56, 58, 59, 61, 63, 64, 66, 67, 69, 71, 72, 74, 75, 77, 79, 80, 82, 83, 85, 86, 88, 89, 91, 93, 94, 96, 97, 99, 101, 102 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: -1 < n*r - a(n) < 2 for n >= 1, where r = (3+sqrt(3))/3.

LINKS

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

EXAMPLE

As a word, A284772 = 010010..., in which 0 is in positions 1,3,4,6,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0, 0, 1, 0}}] &, {0}, 6] (* A284772 *)

Flatten[Position[s, 0]]  (* A284773 *)

Flatten[Position[s, 1]]  (* A284774 *)

CROSSREFS

Cf. A284772, A284774.

Sequence in context: A059555 A186539 A054385 * A172272 A056576 A182770

Adjacent sequences:  A284770 A284771 A284772 * A284774 A284775 A284776

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 14 2017

STATUS

approved

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Last modified August 2 21:30 EDT 2021. Contains 346429 sequences. (Running on oeis4.)