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

A024285

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

Terms

    a(0) =0a(1) =1a(2) =-8a(3) =144a(4) =-5184a(5) =305152a(6) =-26442752a(7) =3162378240a(8) =-498850234368

External references