Expansion of tan(sin(x))/cosh(x).

A009669

Expansion of tan(sin(x))/cosh(x).

Terms

    a(0) =1a(1) =-2a(2) =12a(3) =-296a(4) =8208a(5) =-317088a(6) =22384832a(7) =-1922265216a(8) =200049877248

External references