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A208813
as a simple table
n
a(n)
1
1
2
5
3
37
4
355
5
3595
6
41962
7
486633
8
5896400
9
75009913
10
947911584
11
12153660815
12
161974729738
[1,5,37,355,3595,41962,486633,5896400,75009913, 947911584,12153660815,161974729738]