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A284913 Positions of 0 in A284912; complement of A284914. 3
1, 4, 6, 8, 10, 11, 14, 16, 17, 20, 22, 23, 26, 28, 29, 31, 34, 36, 38, 40, 41, 44, 46, 47, 49, 52, 54, 56, 58, 59, 62, 64, 65, 67, 70, 72, 74, 76, 77, 80, 82, 83, 85, 88, 90, 91, 94, 96, 98, 100, 101, 104, 106, 107, 110, 112, 113, 116, 118, 119, 121, 124 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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, A284912 = 011010101..., in which 0 is in positions 1,4,6,8,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0, 1, 0}}] &, {0}, 6] (* A284912 *)

Flatten[Position[s, 0]]  (* A284913 *)

Flatten[Position[s, 1]]  (* A284914 *)

CROSSREFS

Cf. A284912, A284914.

Sequence in context: A272475 A184016 A075254 * A139203 A179372 A240024

Adjacent sequences:  A284910 A284911 A284912 * A284914 A284915 A284916

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 17 2017

STATUS

approved

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Last modified October 18 07:35 EDT 2019. Contains 328146 sequences. (Running on oeis4.)