G.f. A(x) satisfies: A(x) = 1 + x - x^2*A(x)^2.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =-2a(4) =1a(5) =6a(6) =1a(7) =-18a(8) =-16a(9) =50a(10) =93a(11) =-112a(12) =-428a(13) =98a(14) =1713a(15) =936a(16) =-6004a(17) =-8382a(18) =17512a(19) =47608a(20) =-33826a(21) =-221936a(22) =-36335a(23) =892164a(24) =862666a(25) =-3051022a(26) =-6076072a(27) =8026380a(28) =32247334a(29) =-8222288