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A341039
as a simple table
n
a(n)
1
1
2
12
3
18
4
56
5
117
6
810
7
992
8
2091
9
16256
10
796797
11
2488734
12
22122192
13
57636005
14
67100672
15
114243682
[1,12,18,56,117,810,992,2091,16256,796797,2488734, 22122192,57636005,67100672,114243682]