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

Terms

a(0) =1a(1) =-1a(2) =0a(3) =5a(4) =-27a(5) =129a(6) =-654a(7) =3695a(8) =-23475a(9) =166727a(10) =-1309684a(11) =11244309a(12) =-104234215a(13) =1029821545a(14) =-10679924202a(15) =113869873039