a(n) = Product_{k=0..n} (k^2 + (n-k)^2).
A323540
a(n) = Product_{k=0..n} (k^2 + (n-k)^2).
Terms
- a(0) =0a(1) =1a(2) =32a(3) =2025a(4) =204800a(5) =30525625a(6) =6307891200
External references
- oeis: A323540
A323540
a(n) = Product_{k=0..n} (k^2 + (n-k)^2).