A167570 - OEIS

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A167570 as a simple table

n	a(n)
3	6
4	80
5	1344
6	27648
7	675840
8	19169280
9	619315200
10	22460497920
11	903704739840
12	39953262182400
13	1925366729932800
14	100453916344320000
15	5641491941897011200
16	339325293097805414400
17	21763622246962692096000

[6,80,1344,27648,675840,19169280,619315200, 22460497920,903704739840,39953262182400, 1925366729932800,100453916344320000, 5641491941897011200,339325293097805414400, 21763622246962692096000]