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A299669
as a simple table
n
a(n)
1
1
2
8
3
94
4
2009
5
131420
6
17105490
7
4670821739
8
3777344294506
9
6940995630452984
[1,8,94,2009,131420,17105490,4670821739, 3777344294506,6940995630452984]