A108995 - OEIS

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A108995 as a simple table

n	a(n)
0	1
1	2
2	9
3	72
4	890
5	15456
6	352807
7	10093728
8	349534881
9	14270091790
10	672991000968
11	36076060520556
12	2169580363847949
13	144810568283675126
14	10631141835083823945
15	851921010801706760672
16	74031550751810889131475

[1,2,9,72,890,15456,352807,10093728,349534881, 14270091790,672991000968,36076060520556, 2169580363847949,144810568283675126, 10631141835083823945,851921010801706760672, 74031550751810889131475]