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A080657 as a simple table

n a(n)
1 1
2 3674160
3 43252003274489856000
4 7401196841564901869874093974498574336000000000

[1,3674160,43252003274489856000,
 7401196841564901869874093974498574336000000000]

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)