A172801 - OEIS

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A172801 as a simple table

n	a(n)
1	0
2	2
3	189
4	157984
5	514790020
6	5334492792240
7	150603715387867113
8	10301508972326640532800
9	1555479697698632517004275840
10	480593112323971829410256539190400

[0,2,189,157984,514790020,5334492792240, 150603715387867113,10301508972326640532800, 1555479697698632517004275840, 480593112323971829410256539190400]