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A287075 Positions of 2 in A287072. 4
3, 6, 11, 15, 20, 24, 27, 31, 36, 40, 43, 48, 52, 55, 59, 64, 68, 71, 76, 80, 85, 89, 92, 97, 101, 104, 108, 113, 117, 120, 125, 129, 134, 138, 141, 145, 150, 154, 157, 162, 166, 171, 175, 178, 183, 187, 190, 194, 199, 203, 206, 211, 215, 220, 224, 227, 231 (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 -> {0, 1}, 1 -> {2, 1}, 2 -> 0}] &, {0}, 10] (* A287072 *)

Flatten[Position[s, 0]] (* A287073 *)

Flatten[Position[s, 1]] (* A287074 *)

Flatten[Position[s, 2]] (* A287075 *)

CROSSREFS

Cf. A287072, A287073, A287074.

Sequence in context: A310100 A234011 A113960 * A263260 A324773 A152682

Adjacent sequences:  A287072 A287073 A287074 * A287076 A287077 A287078

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 21 2017

STATUS

approved

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Last modified January 25 10:03 EST 2022. Contains 350565 sequences. (Running on oeis4.)