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A092636
as a simple table
n
a(n)
1
1
2
5
3
31
4
208
5
1555
6
12465
7
102704
8
869060
9
7540342
10
66571720
11
595513442
[1,5,31,208,1555,12465,102704,869060,7540342, 66571720,595513442]