G.f. A(x) satisfies: A(x) = A(x^3)^(1/3) + 9*x.

Terms

a(0) =1a(1) =9a(2) =0a(3) =3a(4) =0a(5) =0a(6) =-9a(7) =0a(8) =0a(9) =46a(10) =0a(11) =0a(12) =-276a(13) =0a(14) =0a(15) =1827a(16) =0a(17) =0a(18) =-12838a(19) =0a(20) =0a(21) =93885a(22) =0a(23) =0a(24) =-706878a(25) =0a(26) =0a(27) =5440856a(28) =0a(29) =0