A100444 - OEIS

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A100444 as a simple table

n	a(n)
0	1
1	3
2	53
3	2119
4	148329
5	16019531
6	2467007773
7	513137616783
8	138547156531409
9	47106033220679059
10	19690321886243846661
11	9923922230666898717143
12	5934505493938805432851513
13	4154153845757163802996059099

[1,3,53,2119,148329,16019531,2467007773, 513137616783,138547156531409,47106033220679059, 19690321886243846661,9923922230666898717143, 5934505493938805432851513, 4154153845757163802996059099]