A230569 - OEIS

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A230569 as a simple table

n	a(n)
1	0
2	2
3	868
4	93450
5	8554108
6	765537650
7	67978636208
8	6025699711838
9	533868483494346
10	47294149473702510
11	4189543104517883096
12	371126778105434772710
13	32875849423134323212550
14	2912268619993019980829876

[0,2,868,93450,8554108,765537650,67978636208, 6025699711838,533868483494346,47294149473702510, 4189543104517883096,371126778105434772710, 32875849423134323212550,2912268619993019980829876]