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A064593
as a simple table
n
a(n)
1
186076800
2
3456573120
3
18924364800
4
325377803520
5
2666567816640
6
8538872307840
7
11169839116800
[186076800,3456573120,18924364800,325377803520, 2666567816640,8538872307840,11169839116800]