[go: up one dir, main page]

login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A283965
Positions of 1 in A283963; complement of A283964.
3
1, 3, 5, 6, 8, 10, 11, 13, 15, 17, 19, 20, 22, 24, 25, 27, 29, 31, 33, 34, 36, 38, 39, 41, 43, 44, 46, 48, 49, 51, 53, 55, 57, 58, 60, 62, 63, 65, 67, 69, 71, 72, 74, 76, 77, 79, 81, 82, 84, 86, 87, 89, 91, 93, 95, 96, 98, 100, 101, 103, 105, 107, 109, 110
OFFSET
1,2
COMMENTS
Conjecture: -1 < n*sqrt(3) - a(n) < 2 for n >= 1.
LINKS
EXAMPLE
The first 10 letters of the word in A282963 are 1010110101, in which the positions of 1 are 1,3,5,6,8.
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {1}, 1 -> {1, 0, 1, 0}}] &, {0}, 10] (* A283963 *)
Flatten[Position[s, 0]] (* A283964 *)
Flatten[Position[s, 1]] (* A283965 *)
CROSSREFS
Sequence in context: A189682 A003152 A325913 * A193599 A068125 A139437
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Mar 25 2017
STATUS
approved