a(n) = Sum_{k=0..n} ( binomial(n,k) - binomial(n,k-1) )^6.

A382435

a(n) = Sum_{k=0..n} ( binomial(n,k) - binomial(n,k-1) )^6.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =129a(4) =1587a(5) =39443a(6) =1125383a(7) =30211457a(8) =1107074979a(9) =36214609683

External references