A284914 - OEIS

A284914

Positions of 1 in A284912; complement of A284913.

2, 3, 5, 7, 9, 12, 13, 15, 18, 19, 21, 24, 25, 27, 30, 32, 33, 35, 37, 39, 42, 43, 45, 48, 50, 51, 53, 55, 57, 60, 61, 63, 66, 68, 69, 71, 73, 75, 78, 79, 81, 84, 86, 87, 89, 92, 93, 95, 97, 99, 102, 103, 105, 108, 109, 111, 114, 115, 117, 120, 122, 123, 125

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

OFFSET

1,1

COMMENTS

2n - a(n) is in {0,1} for n >= 1.

LINKS

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

EXAMPLE

As a word, A284912 = 011010101..., in which 1 is in positions 2,3,5,7,9,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0, 1, 0}}] &, {0}, 6] (* A284912 *)

Flatten[Position[s, 0]] (* A284913 *)