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A289021 as a simple table

n a(n)
1 4
2 5
3 15
4 845
5 403227665
6 64175114443109790962237345
7 264288160993294964501375691029638701718807009656135518176301450923295365341665 

[4,5,15,845,403227665,64175114443109790962237345,
 26428816099329496450137569102963870171880700965613\
 5518176301450923295365341665]

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Last modified August 29 21:34 EDT 2024. Contains 375518 sequences. (Running on oeis4.)