A287075 Positions of 2 in A287072.

3, 6, 11, 15, 20, 24, 27, 31, 36, 40, 43, 48, 52, 55, 59, 64, 68, 71, 76, 80, 85, 89, 92, 97, 101, 104, 108, 113, 117, 120, 125, 129, 134, 138, 141, 145, 150, 154, 157, 162, 166, 171, 175, 178, 183, 187, 190, 194, 199, 203, 206, 211, 215, 220, 224, 227, 231

Offset: 1

Author

Clark Kimberling, May 21 2017

Keywords

• nonn
• easy

Links

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

Crossrefs

Cf. A287072, A287073, A287074.

Programs

Mathematica

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {2, 1}, 2 -> 0}] &, {0}, 10] (* A287072 *)
Flatten[Position[s, 0]] (* A287073 *)
Flatten[Position[s, 1]] (* A287074 *)
Flatten[Position[s, 2]] (* A287075 *)