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A157588 as a simple table

n a(n)
2 1
3 9
4 54
5 18490
6 3080025
7 281083131
8 20455480647
9 1378645284663
10 90798695826120
11 5747081242763245
12 353783429708291517
13 21210677666294419836
14 1217797507802900629878
15 66543379957754376544455

[1,9,54,18490,3080025,281083131,20455480647,
 1378645284663,90798695826120,5747081242763245,
 353783429708291517,21210677666294419836,
 1217797507802900629878,66543379957754376544455]

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Last modified October 6 23:36 EDT 2022. Contains 357270 sequences. (Running on oeis4.)