a(n) = Sum_{k=0..n} binomial(2*n,n)*binomial(n, k)*(5*k)!/((k!)^3*(2*k)!).
A381165
a(n) = Sum_{k=0..n} binomial(2*n,n)*binomial(n, k)*(5*k)!/((k!)^3*(2*k)!).
Terms
- a(0) =1a(1) =122a(2) =114126a(3) =169305620a(4) =307902541870
External references
- oeis: A381165