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A156510
as a simple table
n
a(n)
1
1
2
2
3
10
4
198
5
10918
6
2335392
7
1569913286
8
14728525914260
9
599617717929388908
[1,2,10,198,10918,2335392,1569913286, 14728525914260,599617717929388908]