A013522 - OEIS

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A013522 as a simple table

n	a(n)
0	1
1	1
2	37
3	137
4	41641
5	3887
6	241586893
7	5721418891
8	4315903789009
9	2832484672207
10	183184249105857781
11	2154299222076719401
12	1431144441595717024523
13	386845480523042818420133

[1,1,37,137,41641,3887,241586893,5721418891, 4315903789009,2832484672207,183184249105857781, 2154299222076719401,1431144441595717024523, 386845480523042818420133]