A191006 - OEIS

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A191006 as a simple table

n	a(n)
1	1
2	2
3	6
4	24
5	144
6	1296
7	16848
8	320112
9	8963136
10	367488576
11	22049314560
12	1940339681280
13	250303818885120
14	47307421769287680
15	13104155830092687360
16	5320287267017631068160
17	3165570923875490485555200

[1,2,6,24,144,1296,16848,320112,8963136,367488576, 22049314560,1940339681280,250303818885120, 47307421769287680,13104155830092687360, 5320287267017631068160,3165570923875490485555200]