login
A287265
Positions of 1 in A287263.
4
5, 6, 11, 12, 13, 14, 16, 17, 23, 24, 29, 30, 31, 32, 34, 35, 37, 38, 40, 41, 47, 48, 50, 51, 61, 62, 67, 68, 69, 70, 72, 73, 79, 80, 85, 86, 87, 88, 90, 91, 93, 94, 96, 97, 103, 104, 106, 107, 113, 114, 116, 117, 123, 124, 126, 127, 137, 138, 143, 144, 145
OFFSET
1,1
LINKS
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {0, 2}, 2 -> 0}] &, {0}, 10] (* A287263 *)
Flatten[Position[s, 0]] (* A287264 *)
Flatten[Position[s, 1]] (* A287265 *)
Flatten[Position[s, 2]] (* A287266 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 24 2017
STATUS
approved