A128614 - OEIS

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A128614 as a simple table

n	a(n)
1	0
2	6
3	24
4	360
5	4320
6	75600
7	1451520
8	33022080
9	841881600
10	24069830400
11	759217536000
12	26234438630400
13	984940333977600
14	39932452175616000
15	1738621071323136000
16	80909997706137600000
17	4007834720796082176000

[0,6,24,360,4320,75600,1451520,33022080,841881600, 24069830400,759217536000,26234438630400, 984940333977600,39932452175616000, 1738621071323136000,80909997706137600000, 4007834720796082176000]