A113086 - OEIS

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A113086 as a simple table

n	a(n)
1	1
2	4
3	33
4	586
5	23299
6	2166800
7	490872957
8	280082001078
9	412989850899863
10	1604627387895595612
11	16673986511766782602033
12	468802076619022792385223170
13	35999655498002937223238590342603

[1,4,33,586,23299,2166800,490872957,280082001078, 412989850899863,1604627387895595612, 16673986511766782602033, 468802076619022792385223170, 35999655498002937223238590342603]