A001624 - OEIS

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A001624 as a simple table

n	a(n)
2	1
3	5
4	58
5	1274
6	41728
7	1912112
8	116346400
9	9059742176
10	877746364288
11	103483282967936
12	14581464284095744
13	2419278174185319680
14	466730664414683625472
15	103580258158369503481856
16	26198788829773597178540032

[1,5,58,1274,41728,1912112,116346400,9059742176, 877746364288,103483282967936,14581464284095744, 2419278174185319680,466730664414683625472, 103580258158369503481856, 26198788829773597178540032]