# A002196 (b-file synthesized from sequence entry)
0 1
1 12
2 720
3 60480
4 3628800
5 95800320
6 2615348736000
7 4483454976000
8 32011868528640000
9 51090942171709440000
10 152579284313702400000
11 120866571766215475200000
12 50814724101952310083584000000