A287333 Positions of 1 in A287331.

1, 3, 9, 11, 13, 19, 25, 31, 35, 39, 41, 43, 49, 51, 53, 59, 61, 63, 69, 75, 81, 85, 89, 91, 93, 99, 105, 111, 115, 119, 121, 123, 129, 135, 141, 145, 149, 151, 153, 159, 163, 167, 169, 171, 177, 181, 185, 187, 189, 195, 197, 199, 205, 207, 209, 215, 221

Offset: 1

Author

Clark Kimberling, May 23 2017

Keywords

• nonn
• easy

Links

• Clark Kimberling, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A287331, A287332, A287334.

Programs

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {2, 2}, 2 -> 0}] &, {0}, 10] (* A287331 *)
Flatten[Position[s, 0]] (* A287332 *)
Flatten[Position[s, 1]] (* A287333 *)
Flatten[Position[s, 2]] (* A287334 *)