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

Terms

a(0) =0a(1) =2a(2) =2a(3) =12a(4) =24a(5) =90a(6) =234a(7) =756a(8) =2160a(9) =6642a(10) =19602a(11) =59292a(12) =176904a(13) =532170a(14) =1593594a(15) =4785156a(16) =14346720a(17) =43053282a(18) =129133602a(19) =387440172a(20) =1162241784a(21) =3486843450a(22) =10460294154a(23) =31381236756a(24) =94143001680a(25) =282430067922a(26) =847288078002