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A081886
as a simple table
n
a(n)
1
1
2
5
3
26
4
77
5
522
6
669
7
5772
8
13827
9
48610
10
55991
11
699612
12
785633
13
11359222
[1,5,26,77,522,669,5772,13827,48610,55991,699612, 785633,11359222]