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

Terms

a(0) =0a(1) =1a(2) =0a(3) =-2a(4) =12a(5) =-39a(6) =60a(7) =400a(8) =-4872a(9) =29449a(10) =-75240a(11) =-792054a(12) =14470500a(13) =-126336287a(14) =451892532a(15) =6486922156a(16) =-158017858320