a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(k*n,k).
A349471
a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(k*n,k).
Terms
- a(0) =1a(1) =0a(2) =5a(3) =71a(4) =1625a(5) =48699a(6) =1815157a(7) =80960200a(8) =4205895521a(9) =249447427145
External references
- oeis: A349471