E.g.f.: exp(x/(1-5*x)).A321848E.g.f.: exp(x/(1-5*x)).Terms a(0) =1a(1) =1a(2) =11a(3) =181a(4) =3961a(5) =108101a(6) =3532651a(7) =134415961a(8) =5834249681a(9) =284391878761External referencesoeis: A321848