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A316611
as a simple table
n
a(n)
1
1
2
5
3
14
4
77
5
649
6
5464
7
65158
8
1249304
9
29420195
10
965313430
11
47647816201
12
3134382222825
13
282884293077707
[1,5,14,77,649,5464,65158,1249304,29420195, 965313430,47647816201,3134382222825, 282884293077707]