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A118909 as a simple table

n a(n)
1 4
2 21
3 445
4 198026
5 39214296677
6 1537761063871773242347
7 2364709089560047865452947255794201194068433
8 5591849078247910476736920566826713466552016538943524658263883555662554776622687075541 

[4,21,445,198026,39214296677,
 1537761063871773242347,
 2364709089560047865452947255794201194068433,
 55918490782479104767369205668267134665520165389435\
 24658263883555662554776622687075541]

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Last modified September 9 18:08 EDT 2024. Contains 375765 sequences. (Running on oeis4.)