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A232612
as a simple table
n
a(n)
1
9
2
23
3
93
4
713
5
1521
6
6561
7
53539
8
912585
9
2788563
10
18652349
11
150984429
12
1188137775
[9,23,93,713,1521,6561,53539,912585,2788563, 18652349,150984429,1188137775]