Expansion of -x*(1+x+x^2+x^4)/(-1+2*x^3+x^6).

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =2a(6) =5a(7) =7a(8) =5a(9) =12a(10) =17a(11) =12a(12) =29a(13) =41a(14) =29a(15) =70a(16) =99a(17) =70a(18) =169a(19) =239a(20) =169a(21) =408a(22) =577a(23) =408a(24) =985a(25) =1393a(26) =985a(27) =2378a(28) =3363a(29) =2378