A287270 Positions of 2 in A287267.

8, 10, 18, 20, 22, 24, 28, 30, 40, 42, 50, 52, 54, 56, 60, 62, 66, 68, 72, 74, 84, 86, 90, 92, 108, 110, 118, 120, 122, 124, 128, 130, 140, 142, 150, 152, 154, 156, 160, 162, 166, 168, 172, 174, 184, 186, 190, 192, 202, 204, 208, 210, 220, 222, 226, 228, 244

Offset

1,1

Links

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

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {0, 2}, 2 -> 0}] &, {0}, 11] (* A287267 *)
Flatten[Position[s, 0]] (* A287268 *)
Flatten[Position[s, 1]] (* A287269 *)
Flatten[Position[s, 2]] (* A287270 *)

Crossrefs

Cf. A287267, A287268, A287269.

Sequence in context: A121846 A059094 A302166 * A299988 A143617 A015732

Adjacent sequences: A287267 A287268 A287269 * A287271 A287272 A287273

Keyword

nonn,easy

Author

Clark Kimberling, May 24 2017

Status

approved