A221626 - OEIS

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A221626 as a simple table

n	a(n)
1	1
2	5
3	453
4	85035
5	51149685
6	57614883627
7	130516916069715
8	492362067027383802
9	3063154239917651379537
10	28932140956374841410316707
11	405028623674958829496315433651
12	8040080740216333451541433497055002

[1,5,453,85035,51149685,57614883627, 130516916069715,492362067027383802, 3063154239917651379537,28932140956374841410316707, 405028623674958829496315433651, 8040080740216333451541433497055002]