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A157589 as a simple table

n a(n)
2 1
3 9
4 342
5 26670
6 1960515
7 199230213
8 17543249724
9 1392949344564
10 103992753869385
11 7125947800456375
12 447172658110001142
13 26218227869348323614
14 1476897053364550626991
15 80893894777513364496600

[1,9,342,26670,1960515,199230213,17543249724,
 1392949344564,103992753869385,7125947800456375,
 447172658110001142,26218227869348323614,
 1476897053364550626991,80893894777513364496600]

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Last modified September 30 15:50 EDT 2022. Contains 357106 sequences. (Running on oeis4.)