Expansion of e.g.f. cos(tanh(x)*log(1+x)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =-12a(5) =60a(6) =-90a(7) =420a(8) =-8960a(9) =64512a(10) =-299880a(11) =3709200a(12) =-52709976a(13) =480109344a(14) =-4993564576a(15) =83895608160