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A185558
as a simple table
n
a(n)
1
43
2
63544
3
29168100
4
15594228288
5
7976049592892
6
4170998760222200
7
2159859526859795892
[43,63544,29168100,15594228288,7976049592892, 4170998760222200,2159859526859795892]