A283725 - OEIS

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A283725 as a simple table

n	a(n)
1	0
2	4220
3	369328
4	25260000
5	1590274565
6	94357463834
7	5410290101514
8	302490564406270
9	16600142770401845
10	897968848303855396
11	48020384269733267214
12	2544060241155707255130
13	133737173204786854881261

[0,4220,369328,25260000,1590274565,94357463834, 5410290101514,302490564406270,16600142770401845, 897968848303855396,48020384269733267214, 2544060241155707255130,133737173204786854881261]