A285618 - OEIS

A285618

Positions of 0 in A285617; complement of A285619.

2, 3, 4, 12, 13, 14, 16, 17, 18, 20, 21, 22, 24, 25, 26, 28, 29, 30, 32, 33, 34, 36, 37, 38, 46, 47, 48, 56, 57, 58, 66, 67, 68, 76, 77, 78, 86, 87, 88, 96, 97, 98, 106, 107, 108, 110, 111, 112, 114, 115, 116, 118, 119, 120, 122, 123, 124, 126, 127, 128, 130

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

OFFSET

1,1

COMMENTS

Conjecture: a(n)/n -> 2.

LINKS

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

EXAMPLE

As a word, A285617 = 1000111111100010001001..., in which 0 is in positions 2,3,4,12,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 0, 0, 0}}] &, {0}, 10] (* A285617 *)

Flatten[Position[s, 0]] (* A285618 *)