login
A284389
Positions of 0 in A284388; complement of A284390.
4
1, 2, 4, 5, 9, 10, 12, 13, 15, 16, 20, 21, 25, 26, 30, 31, 33, 34, 36, 37, 41, 42, 44, 45, 47, 48, 52, 53, 55, 56, 58, 59, 63, 64, 68, 69, 73, 74, 76, 77, 79, 80, 84, 85, 89, 90, 94, 95, 97, 98, 100, 101, 105, 106, 110, 111, 115, 116, 118, 119, 121, 122, 126
OFFSET
1,2
LINKS
FORMULA
a(n) = 1 + A284392(n-2) for n >= 3.
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {1}, 1 -> {0, 0, 1}}] &, {0}, 8]; (* A284388 *)
Flatten[Position[s, 0]]; (* A284389 *)
Flatten[Position[s, 1]]; (* A284390 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Mar 30 2017
STATUS
approved