A284370 Positions of 0 in A284369; complement of A284371.

2, 3, 8, 9, 12, 13, 16, 17, 20, 21, 26, 27, 30, 31, 36, 37, 40, 41, 46, 47, 50, 51, 56, 57, 60, 61, 64, 65, 68, 69, 74, 75, 78, 79, 84, 85, 88, 89, 92, 93, 96, 97, 102, 103, 106, 107, 112, 113, 116, 117, 120, 121, 124, 125, 130, 131, 134, 135, 140, 141, 144

Offset

1,1

Comments

Conjecture: -3 < n*r - a(n) < 4 for n >= 1, where r = (3+sqrt(3))/2.

Links

Clark Kimberling, Table of n, a(n) for n = 1..13375

Example

The first 10 letters of the word in A284369 are 1001111001, in which the positions of 0 are 2,3,8,9.

Mathematica

s = Nest[Flatten[# /. {0 -> {1}, 1 -> {1, 0, 0, 1}}] &, {0}, 9]; (* A284369 *)
Flatten[Position[s, 0]];  (* A284370 *)
Flatten[Position[s, 1]];  (* A284371 *)

Crossrefs

Cf. A284369, A284371.

Sequence in context: A290150 A237037 A283618 * A273783 A075190 A224225

Adjacent sequences: A284367 A284368 A284369 * A284371 A284372 A284373

Keyword

nonn,easy

Author

Clark Kimberling, Mar 26 2017

Status

approved