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A284879
Positions of 0 in A284878; complement of A284880.
3
1, 3, 6, 7, 9, 12, 13, 16, 17, 19, 21, 24, 25, 27, 30, 31, 34, 35, 37, 39, 42, 43, 46, 47, 49, 51, 54, 55, 57, 60, 61, 63, 66, 67, 70, 71, 73, 75, 78, 79, 81, 84, 85, 88, 89, 91, 93, 96, 97, 100, 101, 103, 105, 108, 109, 111, 114, 115, 117, 120, 121, 124
OFFSET
1,2
LINKS
FORMULA
2n - a(n ) = A189628(n) for n >= 1.
EXAMPLE
As a word, A284878 = 010110..., in which 0 is in positions 1,3,6,7,...
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0, 1, 1, 0}}] &, {0}, 7] (* A284878 *)
Flatten[Position[s, 0]] (* A284879 *)
Flatten[Position[s, 1]] (* A284880 *)
CROSSREFS
Sequence in context: A047242 A190335 A083951 * A208327 A131392 A131397
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 15 2017
STATUS
approved