A287344 Positions of 2 in A287341.

3, 5, 9, 11, 13, 15, 23, 25, 35, 37, 41, 43, 45, 47, 55, 57, 65, 67, 75, 77, 93, 95, 99, 101, 111, 113, 117, 119, 121, 123, 131, 133, 149, 151, 155, 157, 167, 169, 173, 175, 179, 181, 185, 187, 189, 191, 199, 201, 211, 213, 217, 219, 221, 223, 231, 233, 241

Offset

1,1

Links

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

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {2, 0}, 2 -> 0}] &, {0}, 10] (* A287341 *)
Flatten[Position[s, 0]] (* A287342 *)
Flatten[Position[s, 1]] (* A287343 *)
Flatten[Position[s, 2]] (* A287344 *)

Crossrefs

Cf. A287341, A287342, A287343.

Sequence in context: A319009 A294427 A141231 * A047623 A190523 A161781

Adjacent sequences: A287341 A287342 A287343 * A287345 A287346 A287347

Keyword

nonn,easy

Author

Clark Kimberling, May 24 2017

Status

approved