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A309080 as a simple table

n a(n)
1 2
2 5
3 3
4 20
5 570
6 341400
7 116758458000
8 13632577445813641200000
9 185847167817698504752014113195034069600000000
10 34539169785859790805229099212216829464451540660176789302662465332580254227520000000000000

[2,5,3,20,570,341400,116758458000,
 13632577445813641200000,
 185847167817698504752014113195034069600000000,
 34539169785859790805229099212216829464451540660176\
 789302662465332580254227520000000000000]

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Last modified September 28 14:44 EDT 2022. Contains 357073 sequences. (Running on oeis4.)