E.g.f.: S(x) = Sum_{n>=0} sinh((2*n+1)*x) * x^n / (1 - x^(2*n+1)).

A257215

E.g.f.: S(x) = Sum_{n>=0} sinh((2*n+1)*x) * x^n / (1 - x^(2*n+1)).

Terms

    a(0) =1a(1) =8a(2) =37a(3) =304a(4) =4081a(5) =51384a(6) =837733a(7) =15583712a(8) =324393985a(9) =7669671400a(10) =195589720261

External references