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A263590
as a simple table
n
a(n)
1
70
2
69084
3
14088801
4
3822509358
5
1035523589834
6
244734723702847
7
54806224439043377
[70,69084,14088801,3822509358,1035523589834, 244734723702847,54806224439043377]