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

A009157

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

Terms

    a(0) =1a(1) =1a(2) =5a(3) =13a(4) =-855a(5) =-38791a(6) =-747539a(7) =59637061a(8) =9421489105a(9) =573991066225

External references