A012350 - OEIS

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A012350 as a simple table

n	a(n)
0	1
1	0
2	12
3	240
4	17808
5	1637760
6	242818752
7	48180857088
8	12774673068288
9	4307001787772928
10	1807577755864845312
11	922535092598044569600
12	562968743814613569146880
13	404689929495830909079552000

[1,0,12,240,17808,1637760,242818752,48180857088, 12774673068288,4307001787772928, 1807577755864845312,922535092598044569600, 562968743814613569146880, 404689929495830909079552000]