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

Terms

a(0) =1a(1) =0a(2) =-2a(3) =-3a(4) =1a(5) =9a(6) =10a(7) =-9a(8) =-38a(9) =-30a(10) =55a(11) =153a(12) =73a(13) =-288a(14) =-587a(15) =-84a(16) =1378a(17) =2133a(18) =-539a(19) =-6183a(20) =-7238a(21) =5667a(22) =26326a(23) =22230a(24) =-36089a(25) =-106875a(26) =-56927a(27) =192912a(28) =413641a(29) =84744