Expansion of e.g.f. exp(x * (2 - exp(x))).

Terms

a(0) =1a(1) =1a(2) =-1a(3) =-8a(4) =-15a(5) =46a(6) =445a(7) =1240a(8) =-4319a(9) =-63782a(10) =-282219a(11) =474508a(12) =16681489a(13) =119013142a(14) =137086573a(15) =-6217558664a(16) =-73971468351a(17) =-333213031502