A203526 - OEIS

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A203526 as a simple table

n	a(n)
1	1
2	8
3	480
4	322560
5	1857945600
6	137339338752000
7	90498933234597888000
8	806410654352196092559360000
9	151104996166246050391298219704320000
10	278316545034703677313682486677538340864000000

[1,8,480,322560,1857945600,137339338752000, 90498933234597888000,806410654352196092559360000, 151104996166246050391298219704320000, 278316545034703677313682486677538340864000000]