E.g.f.: 3*exp(3*x) / (5 - 2*exp(3*x)).

A201367

E.g.f.: 3*exp(3*x) / (5 - 2*exp(3*x)).

Terms

    a(0) =1a(1) =5a(2) =35a(3) =345a(4) =4515a(5) =73905a(6) =1451835a(7) =33273945a(8) =871529715a(9) =25681042305a(10) =840815302635

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