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

A390386

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

Terms

    a(0) =1a(1) =8a(2) =100a(3) =1445a(4) =22146a(5) =350302a(6) =5652373a(7) =92466885a(8) =1527978234a(9) =25444641278a(10) =426305765326

External references