a(n) = Sum_{k=0..n} binomial(n,k)*(5*k)!/(k!)^5.
A381164
a(n) = Sum_{k=0..n} binomial(n,k)*(5*k)!/(k!)^5.
Terms
- a(0) =1a(1) =121a(2) =113641a(3) =168508561a(4) =306213587881
External references
- oeis: A381164
A381164
a(n) = Sum_{k=0..n} binomial(n,k)*(5*k)!/(k!)^5.