Expansion of sin(tanh(x))*x/2.

A024273

Expansion of sin(tanh(x))*x/2.

Terms

    a(0) =0a(1) =1a(2) =-6a(3) =111a(4) =-3836a(5) =208205a(6) =-16162146a(7) =1691108251a(8) =-228856755640

External references