A287122 Positions of 0 in A287121.

2, 4, 6, 8, 10, 12, 15, 17, 19, 21, 23, 25, 27, 29, 31, 34, 36, 38, 41, 44, 46, 48, 50, 52, 54, 57, 59, 61, 63, 65, 67, 69, 71, 73, 76, 78, 80, 82, 84, 86, 88, 90, 92, 95, 97, 99, 102, 105, 107, 109, 111, 113, 115, 118, 120, 122, 125, 128, 130, 132, 135, 138

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, A287123, A287124.

Sequence in context: A255385 A187412 A187473 * A064997 A292651 A113903

Adjacent sequences: A287119 A287120 A287121 * A287123 A287124 A287125

Keyword

nonn,easy

Author

Clark Kimberling, May 22 2017

Status

approved