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

Terms

a(0) =1a(1) =3a(2) =21a(3) =165a(4) =1380a(5) =11982a(6) =106626a(7) =965442a(8) =8854725a(9) =82022115a(10) =765787773a(11) =7195638909a(12) =67973370618a(13) =644991134880