A004384 - OEIS

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A004384 as a simple table

n	a(n)
3	1
4	32
5	780
6	17296
7	367290
8	7624512
9	156238908
10	3176716400
11	64276915527
12	1296543270880
13	26100986351440
14	524780754733872
15	10542859559688820
16	211709328983644800
17	4250305029168216000
18	85323087086516197776

[1,32,780,17296,367290,7624512,156238908, 3176716400,64276915527,1296543270880, 26100986351440,524780754733872,10542859559688820, 211709328983644800,4250305029168216000, 85323087086516197776]