A052503
formatted as a simple table:
n
a(n)
0
1
1
1
2
9
3
105
4
2625
5
76545
6
3440745
7
176080905
8
12034447425
9
922995698625
10
87505195602825
[1,1,9,105,2625,76545,3440745,176080905, 12034447425,922995698625,87505195602825]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 23 17:09 EST 2009. Contains 167438 sequences.
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