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A284472 Positions of 0 in A284471; complement of A284473. 4
2, 4, 5, 8, 10, 11, 13, 15, 16, 19, 21, 22, 23, 25, 26, 28, 30, 31, 35, 37, 38, 41, 43, 44, 46, 48, 49, 52, 54, 55, 56, 58, 59, 61, 63, 64, 67, 69, 70, 72, 74, 75, 78, 80, 81, 82, 84, 85, 87, 89, 90, 94, 96, 97, 100, 102, 103, 105, 107, 108, 111, 113, 114 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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, 1, 0, 0}}] &, {0}, 17]; (* A284471 *)

Flatten[Position[s, 0]];  (* A284472 *)

Flatten[Position[s, 1]];  (* A284473 *)

CROSSREFS

Cf. A284471, A284473.

Sequence in context: A026170 A026174 A120685 * A160545 A161790 A131396

Adjacent sequences:  A284469 A284470 A284471 * A284473 A284474 A284475

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 02 2017

STATUS

approved

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Last modified November 27 12:51 EST 2021. Contains 349394 sequences. (Running on oeis4.)