E.g.f.: (32 - 31*cosh(x)) / (41 - 40*cosh(x)).

A250915

E.g.f.: (32 - 31*cosh(x)) / (41 - 40*cosh(x)).

Terms

    a(0) =1a(1) =9a(2) =2169a(3) =1306809a(4) =1469709369

External references