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A354306
as a simple table
n
a(n)
1
1
2
2
3
7
4
62
5
459
6
4040
7
35386
8
321639
9
2958100
10
27585931
11
259670736
[1,2,7,62,459,4040,35386,321639,2958100,27585931, 259670736]