A105421
formatted as a simple table:
n
a(n)
1
8
2
30
3
31
4
33
5
68
6
72
7
180
8
1052
9
6471
10
40083
11
40087
12
40090
13
40113
14
40120
[8,30,31,33,68,72,180,1052,6471,40083,40087,40090, 40113,40120]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 4 08:07 EST 2009. Contains 170310 sequences.
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