A156467
formatted as a simple table:
n
a(n)
2
2
3
2
4
44
5
76
6
1804
7
8172
8
1022492
9
7436362
10
4686068520
11
71763897760
12
74820160016800
[2,2,44,76,1804,8172,1022492,7436362,4686068520, 71763897760,74820160016800]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
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