G.f. A(x) satisfies: A(x) = Product_{k>=1} (1 - x^k*A(x)^k)^k.

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =4a(4) =1a(5) =-17a(6) =-6a(7) =118a(8) =-8a(9) =-876a(10) =625a(11) =5966a(12) =-7486a(13) =-41937a(14) =75969a(15) =306312a(16) =-768637a(17) =-2164992a(18) =7487063a(19) =14461466a(20) =-70259884a(21) =-89410774a(22) =646971980a(23) =459817892a(24) =-5861484630a(25) =-1128608133a(26) =52082250637a(27) =-15894742662a(28) =-453574650852a(29) =366848121166