Expansion of e.g.f. (1 - x)^x.

Terms

a(0) =1a(1) =0a(2) =-2a(3) =-3a(4) =4a(5) =30a(6) =66a(7) =0a(8) =-496a(9) =-1512a(10) =1800a(11) =51480a(12) =487752a(13) =4633200a(14) =50605296a(15) =620703720a(16) =8278947840a(17) =118504008000