A197048 - OEIS

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A197048 as a simple table

n	a(n)
1	1
2	2
3	10
4	42
5	358
6	4468
7	88056
8	2745186
9	134355866
10	10264692132
11	1234801357470
12	232966546265096
13	68939282741912248

[1,2,10,42,358,4468,88056,2745186,134355866, 10264692132,1234801357470,232966546265096, 68939282741912248]