Expansion of (1+x+x^2)/((1+x^2)*(1+x)^4*(1-x)^5).

Terms

a(0) =1a(1) =2a(2) =6a(3) =9a(4) =19a(5) =26a(6) =46a(7) =59a(8) =94a(9) =116a(10) =172a(11) =206a(12) =290a(13) =340a(14) =460a(15) =530a(16) =695a(17) =790a(18) =1010a(19) =1135a(20) =1421a(21) =1582a(22) =1946a(23) =2149a(24) =2604a(25) =2856a(26) =3416a(27) =3724a(28) =4404a(29) =4776