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A287334 Positions of 2 in A287331. 4
7, 8, 17, 18, 23, 24, 29, 30, 33, 34, 37, 38, 47, 48, 57, 58, 67, 68, 73, 74, 79, 80, 83, 84, 87, 88, 97, 98, 103, 104, 109, 110, 113, 114, 117, 118, 127, 128, 133, 134, 139, 140, 143, 144, 147, 148, 157, 158, 161, 162, 165, 166, 175, 176, 179, 180, 183, 184 (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, 2}, 2 -> 0}] &, {0}, 10] (* A287331 *)

Flatten[Position[s, 0]] (* A287332 *)

Flatten[Position[s, 1]] (* A287333 *)

Flatten[Position[s, 2]] (* A287334 *)

CROSSREFS

Cf. A287331, A287332, A287333.

Sequence in context: A006878 A022312 A055661 * A054312 A106678 A222624

Adjacent sequences:  A287331 A287332 A287333 * A287335 A287336 A287337

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 23 2017

STATUS

approved

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Last modified September 23 13:55 EDT 2017. Contains 292358 sequences.