A170995 - OEIS

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A170995 as a simple table

n	a(n)
2	2
3	118096
4	120815280
5	19896619840
6	1139754451080
7	32740753325472
8	577763760958720
9	7092667383039360
10	65742150901548780
11	487018342594703600
12	3004685799388645312
13	15919220244209484096

[2,118096,120815280,19896619840,1139754451080, 32740753325472,577763760958720,7092667383039360, 65742150901548780,487018342594703600, 3004685799388645312,15919220244209484096]