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

Terms

a(0) =1a(1) =0a(2) =-1a(3) =3a(4) =-22a(5) =100a(6) =-580a(7) =3150a(8) =-16868a(9) =80568a(10) =-141500a(11) =-4254580a(12) =105666112a(13) =-1880236800a(14) =31074394312a(15) =-508890083520