Expansion of sin(log(1+x)/cosh(x)).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =-2a(4) =6a(5) =25a(6) =-165a(7) =-366a(8) =6188a(9) =5573a(10) =-294885a(11) =-813034a(12) =35950266a(13) =-141917555a(14) =-1041102153a(15) =-22047494262a(16) =843256939320