E.g.f.: (sqrt(Pi)/2)*erf(log(1-x)).

Terms

a(0) =0a(1) =-1a(2) =-1a(3) =0a(4) =6a(5) =34a(6) =150a(7) =548a(8) =1064a(9) =-9620a(10) =-190980a(11) =-2379408a(12) =-26412408a(13) =-281137848a(14) =-2923819080a(15) =-29496805392a(16) =-277842087360