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A287270 Positions of 2 in A287267. 4
8, 10, 18, 20, 22, 24, 28, 30, 40, 42, 50, 52, 54, 56, 60, 62, 66, 68, 72, 74, 84, 86, 90, 92, 108, 110, 118, 120, 122, 124, 128, 130, 140, 142, 150, 152, 154, 156, 160, 162, 166, 168, 172, 174, 184, 186, 190, 192, 202, 204, 208, 210, 220, 222, 226, 228, 244 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {0, 2}, 2 -> 0}] &, {0}, 11] (* A287267 *)

Flatten[Position[s, 0]] (* A287268 *)

Flatten[Position[s, 1]] (* A287269 *)

Flatten[Position[s, 2]] (* A287270 *)

CROSSREFS

Cf. A287267, A287268, A287269.

Sequence in context: A121846 A059094 A302166 * A299988 A143617 A015732

Adjacent sequences:  A287267 A287268 A287269 * A287271 A287272 A287273

KEYWORD

nonn,easy,changed

AUTHOR

Clark Kimberling, May 24 2017

STATUS

approved

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Last modified June 6 18:59 EDT 2020. Contains 334832 sequences. (Running on oeis4.)