A045758
formatted as a simple table:
n
a(n)
0
1
1
20
2
200
3
1340
4
6800
5
29028
6
108120
7
355980
8
1047840
9
2793140
10
6830056
[1,20,200,1340,6800,29028,108120,355980,1047840, 2793140,6830056]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.
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