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A122735
as a simple table
n
a(n)
1
1
2
7
3
17
4
1
5
6102977801
6
162287
7
79792265017612001
8
8375575711
9
2486784401
[1,7,17,1,6102977801,162287,79792265017612001, 8375575711,2486784401]