A012237 - OEIS

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A012237 as a simple table

n	a(n)
0	1
1	2
2	32
3	1168
4	80768
5	8855296
6	1420471296
7	312821661696
8	90619729117184
9	33397289918332928
10	15260151754256547840
11	8466388564521610903552
12	5606464118961336397856768
13	4368144479139164180218642432

[1,2,32,1168,80768,8855296,1420471296, 312821661696,90619729117184,33397289918332928, 15260151754256547840,8466388564521610903552, 5606464118961336397856768, 4368144479139164180218642432]