A287348 Positions of 2 in A287345.

1, 3, 11, 13, 29, 31, 35, 37, 47, 49, 53, 55, 57, 59, 67, 69, 85, 87, 91, 93, 103, 105, 109, 111, 121, 123, 127, 129, 139, 141, 145, 147, 151, 153, 157, 159, 161, 163, 171, 173, 183, 185, 189, 191, 193, 195, 203, 205, 221, 223, 227, 229, 239, 241, 245, 247

Offset

1,2

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}, 11] (* A287345 *)
Flatten[Position[s, 0]] (* A287346 *)
Flatten[Position[s, 1]] (* A287347 *)
Flatten[Position[s, 2]] (* A287348 *)

Crossrefs

Cf. A287345, A287346, A287347.

Sequence in context: A296933 A270543 A213697 * A019374 A033680 A032917

Adjacent sequences: A287345 A287346 A287347 * A287349 A287350 A287351

Keyword

nonn,easy

Author

Clark Kimberling, May 24 2017

Status

approved