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

Terms

a(0) =1a(1) =-1a(2) =-2a(3) =1a(4) =5a(5) =0a(6) =-11a(7) =-5a(8) =22a(9) =21a(10) =-39a(11) =-64a(12) =57a(13) =167a(14) =-50a(15) =-391a(16) =-67a(17) =832a(18) =525a(19) =-1597a(20) =-1882a(21) =2669a(22) =5361a(23) =-3456a(24) =-13391a(25) =1551a(26) =30238a(27) =10289a(28) =-62027a(29) =-50816