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A058694 formatted as a simple table:

n a(n)
0 1
1 1
2 2
3 6
4 30
5 210
6 2310
7 34650
8 762300
9 22869000
10 960498000
11 53787888000
12 4141667376000
13 418308404976000
14 56471634671760000
15 9939007702229760000
16 2295910779215074560000
17 681885501426877144320000
18 262525918049347700563200000

[1,1,2,6,30,210,2310,34650,762300,22869000,
 960498000,53787888000,4141667376000,
 418308404976000,56471634671760000,
 9939007702229760000,2295910779215074560000,
 681885501426877144320000,
 262525918049347700563200000]

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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