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A195886 as a simple table

n a(n)
1 1
2 1
3 5
4 65
5 1349
6 90013
7 17612909
8 7690681987
9 6760358933241

[1,1,5,65,1349,90013,17612909,7690681987,
 6760358933241]

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Last modified September 4 18:12 EDT 2024. Contains 375685 sequences. (Running on oeis4.)