

A287526


Positions of 1 in A287524.


3



2, 4, 9, 10, 14, 18, 21, 23, 25, 28, 32, 36, 38, 40, 45, 48, 50, 52, 57, 59, 61, 65, 67, 72, 73, 77, 81, 82, 86, 90, 92, 94, 99, 102, 104, 106, 110, 112, 117, 118, 122, 126, 129, 131, 133, 138, 140, 142, 146, 148, 153, 154, 158, 162, 165, 167, 169, 173, 175
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OFFSET

1,1


COMMENTS

a(n)  a(n1) is in {1, 2, 3, 4, 5} for n >= 1; also, 3n  a(n) is in {0, 1, 2} for n >= 1. The first 20 numbers 3n  a(n) are 1, 2, 0, 2, 1, 0, 0, 1, 2, 2, 1, 0, 1, 2, 0, 0, 1, 2, 0, 1, with 0 in positions given by A287527, 1 in positions given by A189724, and 2 in positions given by A287524.


LINKS



MATHEMATICA

s = Nest[Flatten[# /. {0>{0, 1, 2}, 1>{1, 0, 2}, 2>{2, 0, 1}}] &, {0}, 9]; (*A287524*)
Flatten[Position[s, 0]]; (*A189724*)
Flatten[Position[s, 1]]; (*A287526*)
Flatten[Position[s, 2]]; (*A189634*)


CROSSREFS



KEYWORD

nonn,easy


AUTHOR



STATUS

approved



