A287334 Positions of 2 in A287331.

7, 8, 17, 18, 23, 24, 29, 30, 33, 34, 37, 38, 47, 48, 57, 58, 67, 68, 73, 74, 79, 80, 83, 84, 87, 88, 97, 98, 103, 104, 109, 110, 113, 114, 117, 118, 127, 128, 133, 134, 139, 140, 143, 144, 147, 148, 157, 158, 161, 162, 165, 166, 175, 176, 179, 180, 183, 184

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, A287333.

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 *)