a(n) = Sum_{m=0..n} (Sum_{k=0..m} binomial(n,k))^5.

A294436

a(n) = Sum_{m=0..n} (Sum_{k=0..m} binomial(n,k))^5.

Terms

    a(0) =1a(1) =33a(2) =1268a(3) =50600a(4) =1972128a(5) =75121312a(6) =2803732096a(7) =102885494016

External references