A126466 - OEIS

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A126466 as a simple table

n	a(n)
0	1
1	1
2	3
3	33
4	855
5	40475
6	3039204
7	331630320
8	49563943161
9	9722245517970
10	2423526680920125
11	748560249534719259
12	280702726068079355157
13	125661789748507921799800
14	66215986172320048509110050

[1,1,3,33,855,40475,3039204,331630320,49563943161, 9722245517970,2423526680920125,748560249534719259, 280702726068079355157,125661789748507921799800, 66215986172320048509110050]