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A339581
as a simple table
n
a(n)
1
1
2
2
3
89
4
1122659
5
19099919
6
85864769
7
26089808579
8
554688278429
9
4090932431513069
10
95405042230542329
[1,2,89,1122659,19099919,85864769,26089808579, 554688278429,4090932431513069,95405042230542329]