A157600 - OEIS

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A157600 as a simple table

n	a(n)
2	1
3	3
4	102
5	30030
6	5399445
7	596031513
8	53828636911
9	4407428497293
10	353304900193680
11	27176309595536035
12	2030727740280136689
13	147839184902264090742
14	10306962174706523122706
15	683847390057269455279395

[1,3,102,30030,5399445,596031513,53828636911, 4407428497293,353304900193680,27176309595536035, 2030727740280136689,147839184902264090742, 10306962174706523122706,683847390057269455279395]