E.g.f. sin(x*exp(x)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =2a(4) =-8a(5) =-84a(6) =-504a(7) =-2304a(8) =-6656a(9) =15760a(10) =484000a(11) =5348320a(12) =44393856a(13) =288642368a(14) =1137006976a(15) =-5372233216a(16) =-195241910272