a(n) = Sum_{k=0..n} binomial(n^2 - k,n*k).
A348315
a(n) = Sum_{k=0..n} binomial(n^2 - k,n*k).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =64a(4) =4382a(5) =1357136a(6) =1597653852
External references
- oeis: A348315
A348315
a(n) = Sum_{k=0..n} binomial(n^2 - k,n*k).