A063965 - OEIS

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A063965 as a simple table

n	a(n)
1	1
2	6
3	72
4	1152
5	28800
6	4147200
7	50803200
8	3251404800
9	263363788800
10	26336378880000
11	3186701844480000
12	458885065605120000
13	77551576087265280000
14	15200108913103994880000

[1,6,72,1152,28800,4147200,50803200,3251404800, 263363788800,26336378880000,3186701844480000, 458885065605120000,77551576087265280000, 15200108913103994880000]