Expansion of e.g.f. exp(x - 3*x^2/2).

Terms

a(0) =1a(1) =1a(2) =-2a(3) =-8a(4) =10a(5) =106a(6) =-44a(7) =-1952a(8) =-1028a(9) =45820a(10) =73576a(11) =-1301024a(12) =-3729032a(13) =43107832a(14) =188540080a(15) =-1621988864a(16) =-10106292464a(17) =67749173008a(18) =583170088672