Expansion of tanh(x)*tan(sin(x)).

A009835

Expansion of tanh(x)*tan(sin(x)).

Terms

    a(0) =0a(1) =2a(2) =-4a(3) =38a(4) =-1800a(5) =49354a(6) =-2224652a(7) =213407470a(8) =-19515213328

External references