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

Terms

a(0) =1a(1) =0a(2) =-2a(3) =3a(4) =-3a(5) =10a(6) =-56a(7) =315a(8) =-1971a(9) =13788a(10) =-105246a(11) =857615a(12) =-7266223a(13) =61296222a(14) =-465353292a(15) =1982748495a(16) =36246192441