Expansion of (1+2*x+6*x^2)/(1-9*x^3).

Terms

a(0) =1a(1) =2a(2) =6a(3) =9a(4) =18a(5) =54a(6) =81a(7) =162a(8) =486a(9) =729a(10) =1458a(11) =4374a(12) =6561a(13) =13122a(14) =39366a(15) =59049a(16) =118098a(17) =354294a(18) =531441a(19) =1062882a(20) =3188646a(21) =4782969a(22) =9565938a(23) =28697814a(24) =43046721a(25) =86093442a(26) =258280326a(27) =387420489a(28) =774840978a(29) =2324522934