Expansion of 1/(1 - x^2/(1-9*x)^(1/3)).

Terms

a(0) =1a(1) =0a(2) =1a(3) =3a(4) =19a(5) =132a(6) =991a(7) =7740a(8) =62020a(9) =505857a(10) =4180132a(11) =34889514a(12) =293518072a(13) =2485191753a(14) =21153817090a(15) =180865139538