Sinh(x) / cos(x) = Sum_{n>=0} a(n)*x^(2n+1)/(2n+1)!.

A002084

Sinh(x) / cos(x) = Sum_{n>=0} a(n)*x^(2n+1)/(2n+1)!.

Terms

    a(0) =1a(1) =4a(2) =36a(3) =624a(4) =18256a(5) =814144a(6) =51475776a(7) =4381112064a(8) =482962852096

External references