E.g.f.: 1 / (1 - x * exp(3*x)).

A336951

E.g.f.: 1 / (1 - x * exp(3*x)).

Terms

    a(0) =1a(1) =1a(2) =8a(3) =69a(4) =780a(5) =11145a(6) =191178a(7) =3823785a(8) =87406056a(9) =2247785073a(10) =64228084110

External references