Expansion of exp(tan(x)/exp(x)).

Terms

a(0) =1a(1) =1a(2) =-1a(3) =0a(4) =9a(5) =-28a(6) =65a(7) =294a(8) =-2751a(9) =21496a(10) =-69343a(11) =143154a(12) =4340193a(13) =-44055100a(14) =549236753a(15) =-3053333154a(16) =25428876417a(17) =103583035888