a(n) = Product_{k=1..p-1} k^(2k-p-1), where p = prime(n).

A182484

a(n) = Product_{k=1..p-1} k^(2k-p-1), where p = prime(n).

Terms

    a(0) =1a(1) =1a(2) =4a(3) =225a(4) =8930250000

External references