A108209 - OEIS

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A108209 as a simple table

n	a(n)
0	0
1	2
2	10
3	92
4	1320
5	25664
6	628400
7	18544032
8	640243520
9	25313036288
10	1127562249600
11	55871851754240
12	3048145476992000
13	181547804177418240
14	11721355489130393600
15	815411545722159841280
16	60804225264488076288000

[0,2,10,92,1320,25664,628400,18544032,640243520, 25313036288,1127562249600,55871851754240, 3048145476992000,181547804177418240, 11721355489130393600,815411545722159841280, 60804225264488076288000]