A287089 Positions of 2 in A287086.

3, 4, 13, 14, 17, 18, 21, 22, 27, 28, 33, 34, 43, 44, 53, 54, 63, 64, 67, 68, 71, 72, 81, 82, 85, 86, 89, 90, 99, 100, 103, 104, 107, 108, 113, 114, 119, 120, 129, 130, 133, 134, 137, 138, 143, 144, 149, 150, 159, 160, 163, 164, 167, 168, 173, 174, 179, 180

Offset

1,1

Links

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

Mathematica

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {2, 2}, 2 -> 0}] &, {0}, 10] (* A287086 *)
Flatten[Position[s, 0]] (* A287087 *)
Flatten[Position[s, 1]] (* A287088 *)
Flatten[Position[s, 2]] (* A287089 *)

Crossrefs

Cf. A287086, A287087, A287088.

Sequence in context: A330158 A082197 A138101 * A095790 A109474 A053910

Adjacent sequences: A287086 A287087 A287088 * A287090 A287091 A287092

Keyword

nonn,easy

Author

Clark Kimberling, May 21 2017

Status

approved