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A002688 as a simple table

n a(n)
1 6
2 24
3 45
4 480
5 10080
6 24192
7 907200
8 1036800
9 239500800
10 106444800
11 9906624000
12 475517952000
13 15692092416000
14 4828336128000
15 8002967132160000
16 4268249137152000
17 51607012294656000
18 1202139815804928000

[6,24,45,480,10080,24192,907200,1036800,239500800,
 106444800,9906624000,475517952000,15692092416000,
 4828336128000,8002967132160000,4268249137152000,
 51607012294656000,1202139815804928000]

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Last modified April 24 00:02 EDT 2019. Contains 322404 sequences. (Running on oeis4.)