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A342812
as a simple table
n
a(n)
1
1
2
1
3
7
4
142
5
5895
6
417201
7
45046558
8
6891812712
9
1417730229765
10
377158121463025
[1,1,7,142,5895,417201,45046558,6891812712, 1417730229765,377158121463025]