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A284488 Positions of 0 in A284487; complement of A284489. 6
1, 2, 5, 6, 11, 12, 15, 16, 21, 22, 25, 26, 29, 30, 33, 34, 39, 40, 43, 44, 49, 50, 53, 54, 59, 60, 63, 64, 69, 70, 73, 74, 77, 78, 81, 82, 87, 88, 91, 92, 97, 98, 101, 102, 105, 106, 109, 110, 115, 116, 119, 120, 125, 126, 129, 130, 135, 136, 139, 140, 145 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture:  a(n)/n -> (7 + sqrt(13))/6.

LINKS

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

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1}, 1 -> {0, 0, 1, 1}}] &, {0}, 14]; (* A284487 *)

Flatten[Position[s, 0]];  (* A284488 *)

Flatten[Position[s, 1]];  (* A284489 *)

CROSSREFS

Cf. A284487, A284489, A284491.

Sequence in context: A206332 A269966 A026344 * A057812 A140144 A030130

Adjacent sequences:  A284485 A284486 A284487 * A284489 A284490 A284491

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 04 2017

STATUS

approved

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Last modified November 15 04:00 EST 2018. Contains 317225 sequences. (Running on oeis4.)