A287321 Positions of 0 in A287320.

1, 2, 6, 7, 8, 12, 16, 20, 22, 24, 25, 26, 30, 31, 32, 36, 37, 38, 42, 46, 50, 52, 54, 55, 56, 60, 64, 68, 70, 72, 73, 74, 78, 82, 86, 88, 90, 91, 92, 96, 98, 100, 101, 102, 106, 108, 110, 111, 112, 116, 117, 118, 122, 123, 124, 128, 132, 136, 138, 140, 141

Offset

1,2

Links

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

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {2, 2}, 2 -> 0}] &, {0}, 9] (* A287175 *)
Flatten[Position[s, 0]] (* A287321 *)
Flatten[Position[s, 1]] (* A287322 *)
Flatten[Position[s, 2]] (* A287323 *)

Crossrefs

Cf. A287320, A287322, A287323.

Sequence in context: A189242 A285160 A362462 * A030366 A048859 A026311

Adjacent sequences: A287318 A287319 A287320 * A287322 A287323 A287324

Keyword

nonn,easy

Author

Clark Kimberling, May 23 2017

Status

approved