A287123 Positions of 1 in A287121.

5, 11, 13, 14, 18, 24, 30, 32, 33, 37, 39, 40, 42, 43, 47, 53, 55, 56, 60, 66, 72, 74, 75, 79, 85, 91, 93, 94, 98, 100, 101, 103, 104, 108, 114, 116, 117, 121, 123, 124, 126, 127, 131, 133, 134, 136, 137, 141, 147, 149, 150, 154, 160, 166, 168, 169, 173, 175

Offset

1,1

Links

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

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {2, 0}, 2 -> 1}] &, {0}, 10] (* A287121 *)
Flatten[Position[s, 0]] (* A287122 *)
Flatten[Position[s, 1]] (* A287123 *)
Flatten[Position[s, 2]] (* A287124 *)

Crossrefs

Cf. A287121, A287122, A287124.

Sequence in context: A070369 A357995 A104215 * A227146 A251965 A093685

Adjacent sequences: A287120 A287121 A287122 * A287124 A287125 A287126

Keyword

nonn,easy

Author

Clark Kimberling, May 22 2017

Status

approved