G.f. A(x) satisfies: Sum_{n>=0} A(x^n)^n = x.

Terms

a(0) =1a(1) =0a(2) =0a(3) =-1a(4) =0a(5) =0a(6) =0a(7) =0a(8) =-1a(9) =2a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =-2a(16) =0a(17) =3a(18) =0a(19) =2a(20) =0a(21) =-4a(22) =0a(23) =0a(24) =-1a(25) =-2a(26) =-3a(27) =8a(28) =0a(29) =0