A140451
formatted as a simple table:
n
a(n)
1
1
2
3
3
21
4
105
5
4305
6
21525
7
5316675
8
3291021825
9
38046409656325181475
[1,3,21,105,4305,21525,5316675,3291021825, 38046409656325181475]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 27 14:50 EST 2009. Contains 167570 sequences.
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