a(n) = Sum_{k=0..n} binomial(n+6*k+6,k).

A390390

a(n) = Sum_{k=0..n} binomial(n+6*k+6,k).

Terms

    a(0) =1a(1) =14a(2) =205a(3) =3151a(4) =49900a(5) =805683a(6) =13185440a(7) =217944999a(8) =3630071774a(9) =60828674720

External references