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

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =12a(5) =36a(6) =117a(7) =351a(8) =1080a(9) =3240a(10) =9801a(11) =29403a(12) =88452a(13) =265356a(14) =796797a(15) =2390391a(16) =7173360a(17) =21520080a(18) =64566801a(19) =193700403a(20) =581120892a(21) =1743362676a(22) =5230147077a(23) =15690441231a(24) =47071500840a(25) =141214502520a(26) =423644039001