A285161 - OEIS

A285161

Positions of 1 in A285159; complement of A285160.

3, 4, 5, 9, 10, 11, 13, 15, 19, 20, 23, 24, 25, 27, 31, 32, 35, 36, 37, 39, 43, 44, 47, 48, 51, 52, 53, 57, 58, 59, 63, 64, 65, 67, 69, 73, 74, 77, 78, 79, 81, 85, 86, 89, 90, 91, 93, 97, 98, 101, 102, 105, 106, 107, 109, 111, 115, 116, 119, 120, 123, 124

(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, A285142 = 001110..., in which 1 is in positions 3,4,5,9,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 0, 1, 1}}] &, {0}, 10]; (* A285159 *)

Flatten[Position[s, 0]]; (* A285160 *)