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

Terms

a(0) =1a(1) =0a(2) =1a(3) =-3a(4) =0a(5) =0a(6) =90a(7) =-420a(8) =3192a(9) =-36792a(10) =344640a(11) =-3424080a(12) =40458792a(13) =-515760960a(14) =6995451736a(15) =-102430659240