A329788 - OEIS

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A329788 as a simple table

n	a(n)
1	1
2	2
3	6
4	24
5	116
6	672
7	4520
8	35050
9	303468
10	2934652
11	31145346
12	361323708
13	4535359000
14	61431851046
15	890284097146
16	13784350300996

[1,2,6,24,116,672,4520,35050,303468,2934652, 31145346,361323708,4535359000,61431851046, 890284097146,13784350300996]