A002273 - OEIS

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A002273 as a simple table

n	a(n)
0	1
1	0
2	98280
3	19138560
4	805208040
5	14651449344
6	156717687840
7	1162883174400
8	6596666916840
9	30507984568320
10	119992701299184
11	414348381296640
12	1283840894706720
13	3635166831206400
14	9523995863722560

[1,0,98280,19138560,805208040,14651449344, 156717687840,1162883174400,6596666916840, 30507984568320,119992701299184,414348381296640, 1283840894706720,3635166831206400, 9523995863722560]