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

Terms

a(0) =1a(1) =0a(2) =-1a(3) =-3a(4) =-10a(5) =-45a(6) =-271a(7) =-2058a(8) =-18775a(9) =-199335a(10) =-2410516a(11) =-32683563a(12) =-490870315a(13) =-8087188200a(14) =-144994236661