login
A284937
Positions of 1 in A284935; complement of A284936.
3
2, 3, 4, 7, 8, 11, 12, 16, 18, 19, 20, 23, 24, 28, 30, 31, 32, 35, 36, 40, 42, 44, 45, 46, 50, 51, 52, 55, 56, 59, 60, 64, 66, 67, 68, 71, 72, 76, 78, 80, 81, 82, 86, 87, 88, 91, 92, 95, 96, 100, 102, 103, 104, 107, 108, 112, 114, 116, 117, 118, 122, 123
OFFSET
1,1
COMMENTS
Conjecture: 2n - a(n) is in {0,1,2} for n >= 1.
LINKS
EXAMPLE
As a word, A284935 = 011100..., in which 1 is in positions 2,3,4,7,...
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 1, 0, 0}}] &, {0}, 6] (* A284935 *)
Flatten[Position[s, 0]] (* A284936 *)
Flatten[Position[s, 1]] (* A284937 *)
CROSSREFS
Sequence in context: A240767 A342028 A368402 * A271441 A328421 A003508
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 18 2017
STATUS
approved