Expansion of e.g.f. (1+x)*exp(4*x)*cosh(x).

Terms

a(0) =1a(1) =5a(2) =25a(3) =127a(4) =657a(5) =3449a(6) =18281a(7) =97395a(8) =519841a(9) =2773741a(10) =14776377a(11) =78538343a(12) =416367665a(13) =2201517153a(14) =11610231433a(15) =61078202971a(16) =320570884929