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

Terms

a(0) =1a(1) =0a(2) =2a(3) =-3a(4) =23a(5) =-130a(6) =1016a(7) =-8925a(8) =90369a(9) =-1027332a(10) =12980406a(11) =-180372995a(12) =2734039527a(13) =-44890794078a(14) =793705143908