login
A284654
Positions of 0 in A284653; complement of A284655.
6
1, 4, 6, 9, 10, 13, 16, 19, 20, 23, 25, 28, 30, 33, 34, 37, 39, 42, 44, 47, 48, 51, 54, 57, 58, 61, 63, 66, 67, 70, 72, 75, 76, 79, 82, 85, 86, 89, 91, 94, 96, 99, 100, 103, 106, 109, 110, 113, 115, 118, 120, 123, 124, 127, 130, 133, 134, 137, 139, 142, 143
OFFSET
1,2
COMMENTS
Conjecture: -1 < n*r - a(n) < 3 for n >= 1, where r = (3+sqrt(3))/2.
LINKS
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {1}, 1 -> {0, 1, 1, 0}}] &, {0}, 6] (* A284653 *)
Flatten[Position[s, 0]] (* A284654 *)
Flatten[Position[s, 1]] (* A284655 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 07 2017
STATUS
approved