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A284682 Positions of 1 in A284680; complement of A284681. 3
1, 5, 6, 7, 8, 12, 16, 20, 24, 25, 26, 27, 31, 32, 33, 34, 38, 39, 40, 41, 45, 46, 47, 48, 52, 56, 60, 64, 65, 66, 67, 71, 75, 79, 83, 84, 85, 86, 90, 94, 98, 102, 103, 104, 105, 109, 113, 117, 121, 122, 123, 124, 128, 129, 130, 131, 135, 136, 137, 138, 142 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: a(n)/n -> (1 + sqrt(13))/2.

LINKS

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

EXAMPLE

As a word, A284680 = 1000111100010001000..., in which 1 is in positions 1,5,6,7,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1}, 1 -> {1, 0, 0, 0}}] &, {0}, 8] (* A284680 *)

Flatten[Position[s, 0]]  (* A284681 *)

Flatten[Position[s, 1]]  (* A284682 *)

CROSSREFS

Cf. A283980, A283981.

Sequence in context: A236242 A309102 A080703 * A171405 A047575 A014097

Adjacent sequences:  A284679 A284680 A284681 * A284683 A284684 A284685

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 11 2017

STATUS

approved

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Last modified July 1 11:07 EDT 2022. Contains 354972 sequences. (Running on oeis4.)