E.g.f. exp(log(1+x)*cos(x)).

Terms

a(0) =1a(1) =1a(2) =0a(3) =-3a(4) =-6a(5) =15a(6) =75a(7) =84a(8) =-1820a(9) =-123a(10) =-10725a(11) =475816a(12) =-3554562a(13) =32763107a(14) =-501958275a(15) =6877337128a(16) =-95130710792