A172653 - OEIS

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A172653 as a simple table

n	a(n)
1	0
2	1
3	2385
4	115321795
5	31237467004800
6	35265186498828525525
7	134169254007831527780970675
8	1469515974755674798685294756444250
9	41035736539141994695629689682970685292000

[0,1,2385,115321795,31237467004800, 35265186498828525525,134169254007831527780970675, 1469515974755674798685294756444250, 41035736539141994695629689682970685292000]