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

Terms

a(0) =1a(1) =0a(2) =2a(3) =-4a(4) =-4a(5) =64a(6) =-8a(7) =-3312a(8) =14352a(9) =267776a(10) =-3403744a(11) =-24119360a(12) =881205184a(13) =-593040384a(14) =-261913919616