A287177 Positions of 2 in A287174.

1, 8, 14, 21, 28, 34, 41, 45, 52, 58, 65, 71, 78, 82, 89, 95, 102, 109, 115, 122, 126, 133, 139, 146, 153, 159, 166, 170, 177, 183, 190, 196, 203, 207, 214, 220, 227, 234, 240, 247, 251, 258, 264, 271, 275, 282, 288, 295, 302, 308, 315, 319, 326, 332, 339

Offset: 1

Author

Clark Kimberling, May 22 2017

Keywords

• nonn
• easy

Links

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

Crossrefs

Cf. A287174, A287175, A287176.

Programs

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {2, 0}, 2 -> 0}] &, {0}, 11] (* A287174 *)
Flatten[Position[s, 0]] (* A287175 *)
Flatten[Position[s, 1]] (* A287176 *)
Flatten[Position[s, 2]] (* A287177 *)