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

Terms

a(0) =1a(1) =-5a(2) =24a(3) =-111a(4) =497a(5) =-2166a(6) =9239a(7) =-38765a(8) =160658a(9) =-659773a(10) =2691205a(11) =-10922544a(12) =44166173a(13) =-178098121a(14) =716703848a(15) =-2879774019a(16) =11558005677a(17) =-46348854134a(18) =185746261419a(19) =-744036460097