a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n-1,k-1) * binomial(n*k,k) / ((n-1)*k+1).
A378410
a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n-1,k-1) * binomial(n*k,k) / ((n-1)*k+1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =7a(4) =85a(5) =1581a(6) =40006a(7) =1288729a(8) =50578445a(9) =2344950745a(10) =125538581926
External references
- oeis: A378410