Expansion of sin(sinh(x)/cos(x)).

A009498

Expansion of sin(sinh(x)/cos(x)).

Terms

    a(0) =1a(1) =3a(2) =-3a(3) =-1113a(4) =-77063a(5) =-5509845a(6) =-430006731a(7) =-33282260529

External references