A286492 - OEIS

A286492

Positions of 1 in A286490; complement of A286491.

2, 3, 5, 8, 9, 12, 14, 17, 20, 21, 23, 26, 27, 30, 33, 34, 36, 39, 41, 44, 45, 48, 50, 53, 56, 57, 59, 62, 64, 67, 68, 71, 74, 75, 77, 80, 81, 84, 86, 89, 92, 93, 95, 98, 99, 102, 105, 106, 108, 111, 113, 116, 117, 120, 123, 124, 126, 129, 130, 133, 135, 138

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

a(n) - a(n-1) is in {1,2,3} for n>=2. Conjecture: a(n)/n -> 9/4.

LINKS

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

EXAMPLE

As a word, A286490 = 011010011001010010011..., in which 1 is in positions 2,3,5,8,9,12,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 9] (* A010060 *)

w = StringJoin[Map[ToString, s]]