

A287573


Positions of 1 in A287571.


5



3, 8, 10, 13, 17, 23, 28, 30, 36, 38, 41, 47, 50, 53, 59, 64, 66, 69, 75, 80, 83, 88, 90, 93, 97, 103, 108, 110, 116, 118, 121, 127, 129, 135, 140, 142, 148, 150, 153, 159, 162, 165, 171, 176, 179, 184, 186, 189, 196, 198, 201, 207, 210, 213, 219, 224, 227
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OFFSET

1,1


COMMENTS

a(n)  a(n1) is in {1,2,3,4,5,6,7} for n >= 1; also, 4n  a(n) is in {0,1,2,3} for n >= 1. The first 20 numbers 4n  a(n) are 1, 0, 2, 3, 3, 1, 0, 2, 0, 2, 3, 1, 2, 3, 1, 0, 2, 3, 1, 0, with
0 in positions given by A287575,
1 in positions given by A287572,
2 in positions given by A287573,
3 in positions given by A287574.


LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000


MATHEMATICA

s = Nest[Flatten[# /. {0 > {0, 3, 1, 2}, 1 > {3, 1, 2, 0}, 2 > {1, 2, 0, 3}, 3 > {2, 0, 3, 1}}] &, {0}, 9]; (* A287571 *)
Flatten[Position[s, 0]]; (* A287572 *)
Flatten[Position[s, 1]]; (* A287573 *)
Flatten[Position[s, 2]]; (* A287574 *)
Flatten[Position[s, 3]]; (* A287575 *)


CROSSREFS

Cf. A287571, A287572, A287574, A287575.
Sequence in context: A212966 A074186 A064147 * A122529 A137920 A263005
Adjacent sequences: A287570 A287571 A287572 * A287574 A287575 A287576


KEYWORD

nonn,easy


AUTHOR

Clark Kimberling, Jun 01 2017


STATUS

approved



