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A287107 Positions of 2 in A287104. 4
2, 7, 11, 14, 18, 23, 26, 30, 35, 39, 44, 47, 51, 56, 60, 63, 67, 72, 76, 81, 84, 88, 93, 97, 100, 104, 109, 112, 116, 121, 125, 128, 132, 137, 141, 146, 149, 153, 158, 162, 165, 169, 174, 177, 181, 186, 190, 195, 198, 202, 207, 211, 214, 218, 223, 226, 230 (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 -> {1, 2}, 2 -> 0}] &, {0}, 10] (* A287104 *)

Flatten[Position[s, 0]] (* A287105 *)

Flatten[Position[s, 1]] (* A287106 *)

Flatten[Position[s, 2]] (* A287107 *)

CROSSREFS

Cf. A287104, A287105, A287106.

Sequence in context: A235266 A140548 A243630 * A308550 A018308 A184485

Adjacent sequences:  A287104 A287105 A287106 * A287108 A287109 A287110

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 21 2017

STATUS

approved

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Last modified August 20 22:45 EDT 2019. Contains 326155 sequences. (Running on oeis4.)