A125443 - OEIS

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A125443 as a simple table

n	a(n)
0	1
1	31
2	409
3	4399
4	55177
5	705211
6	9228145
7	122435659
8	1641825097
9	22192435141
10	301837475369
11	4125290661105
12	56599464923761
13	778943329190005
14	10746475355730103
15	148551954418570669
16	2056701047801775993

[1,31,409,4399,55177,705211,9228145,122435659, 1641825097,22192435141,301837475369,4125290661105, 56599464923761,778943329190005,10746475355730103, 148551954418570669,2056701047801775993]