



1, 4, 6, 8, 10, 11, 14, 16, 17, 20, 22, 23, 26, 28, 29, 31, 34, 36, 38, 40, 41, 44, 46, 47, 49, 52, 54, 56, 58, 59, 62, 64, 65, 67, 70, 72, 74, 76, 77, 80, 82, 83, 85, 88, 90, 91, 94, 96, 98, 100, 101, 104, 106, 107, 110, 112, 113, 116, 118, 119, 121, 124
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OFFSET

1,2


COMMENTS

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


LINKS



EXAMPLE

As a word, A284912 = 011010101..., in which 0 is in positions 1,4,6,8,...


MATHEMATICA

s = Nest[Flatten[# /. {0 > {0, 1}, 1 > {1, 0, 1, 0}}] &, {0}, 6] (* A284912 *)
Flatten[Position[s, 0]] (* A284913 *)
Flatten[Position[s, 1]] (* A284914 *)


CROSSREFS



KEYWORD

nonn,easy


AUTHOR



STATUS

approved



