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A233996
as a simple table
n
a(n)
1
1995424
2
4923910
3
11510748
4
39038268
5
117312896
6
533896296
7
1997753492
8
12585162304
9
57382924232
[1995424,4923910,11510748,39038268,117312896, 533896296,1997753492,12585162304,57382924232]