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A287111 Positions of 2 in A287108. 5
4, 7, 9, 14, 16, 20, 27, 30, 32, 36, 43, 45, 52, 57, 60, 62, 67, 69, 73, 80, 82, 89, 94, 97, 99, 103, 110, 115, 118, 120, 127, 130, 132, 137, 139, 143, 150, 153, 155, 159, 166, 168, 175, 180, 183, 185, 189, 196, 201, 204, 206, 213, 216, 218, 223, 225, 229 (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, 0}, 1 -> {2, 1}, 2 -> 0}] &, {0}, 10] (* A287108 *)

Flatten[Position[s, 0]] (* A287109 *)

Flatten[Position[s, 1]] (* A287110 *)

Flatten[Position[s, 2]] (* A287111 *)

CROSSREFS

Cf. A287108, A287109, A287110.

Sequence in context: A139444 A166569 A024608 * A187900 A183992 A187410

Adjacent sequences:  A287108 A287109 A287110 * A287112 A287113 A287114

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 22 2017

STATUS

approved

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Last modified December 8 22:49 EST 2021. Contains 349596 sequences. (Running on oeis4.)