A170997 - OEIS

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A170997 as a simple table

n	a(n)
2	2
3	9565936
4	156718778640
5	199854951398080
6	58230316414059240
7	6451030954702152672
8	360793945093731688960
9	12127449147074861834880
10	274847057797905019237260
11	4548825193274613857646800

[2,9565936,156718778640,199854951398080, 58230316414059240,6451030954702152672, 360793945093731688960,12127449147074861834880, 274847057797905019237260, 4548825193274613857646800]