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

A024243

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

Terms

    a(0) =0a(1) =1a(2) =-2a(3) =-117a(4) =3356a(5) =176405a(6) =-25528806a(7) =-511975457a(8) =554197425592

External references