A185157 - OEIS

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A185157 as a simple table

n	a(n)
1	1
2	3
3	50
4	2100
5	166824
6	21538440
7	4115105280
8	1091804313600
9	384202115256960
10	173201547619900800
11	97349279409046828800
12	66747386996603337024000
13	54838533307770850530816000
14	53185913922332495626882560000

[1,3,50,2100,166824,21538440,4115105280, 1091804313600,384202115256960,173201547619900800, 97349279409046828800,66747386996603337024000, 54838533307770850530816000, 53185913922332495626882560000]