A081960 - OEIS

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A081960 as a simple table

n	a(n)
1	2
2	48
3	25920
4	522547200
5	632073093120000
6	68810005209415680000000
7	922882872556916481982464000000000
8	1930928443374224487368323197252403200000000000
9	848408612299117898787190662782756632189835673600000000000000

[2,48,25920,522547200,632073093120000, 68810005209415680000000, 922882872556916481982464000000000, 1930928443374224487368323197252403200000000000, 84840861229911789878719066278275663218983567360000\ 0000000000]