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

Terms

a(0) =1a(1) =3a(2) =9a(3) =27a(4) =78a(5) =207a(6) =459a(7) =567a(8) =-1926a(9) =-20763a(10) =-120123a(11) =-569349a(12) =-2410200a(13) =-9379449a(14) =-33818715a(15) =-112292001a(16) =-335018295a(17) =-837341388a(18) =-1317232530a(19) =2358000072a(20) =35974607355a(21) =228270292803