Expansion of exp(sin(x))/cosh(x).

Terms

a(0) =1a(1) =1a(2) =0a(3) =-3a(4) =-4a(5) =17a(6) =56a(7) =-203a(8) =-1072a(9) =5473a(10) =34368a(11) =-254067a(12) =-1781440a(13) =16540721a(14) =132000896a(15) =-1419027899a(16) =-12912385792a(17) =156472224961