Expansion of e.g.f. sin(tanh(x)/cos(x)).

A009530

Expansion of e.g.f. sin(tanh(x)/cos(x)).

Terms

    a(0) =1a(1) =0a(2) =12a(3) =-336a(4) =-2096a(5) =-1043328a(6) =-29488704a(7) =-8894706432a(8) =-389860902656

External references