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A317119
as a simple table
n
a(n)
1
1
2
8
3
82
4
1597
5
65099
6
5694906
7
1062867065
8
424977120539
9
367017165957020
[1,8,82,1597,65099,5694906,1062867065, 424977120539,367017165957020]