Expansion of (1+2x-x^3+x^4)/(1-4x^2+3x^4).

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =14a(5) =22a(6) =44a(7) =67a(8) =134a(9) =202a(10) =404a(11) =607a(12) =1214a(13) =1822a(14) =3644a(15) =5467a(16) =10934a(17) =16402a(18) =32804a(19) =49207a(20) =98414a(21) =147622a(22) =295244a(23) =442867a(24) =885734a(25) =1328602a(26) =2657204a(27) =3985807a(28) =7971614a(29) =11957422