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

Terms

a(0) =1a(1) =0a(2) =3a(3) =-3a(4) =10a(5) =-18a(6) =42a(7) =-87a(8) =190a(9) =-405a(10) =873a(11) =-1872a(12) =4024a(13) =-8640a(14) =18561a(15) =-39864a(16) =85627a(17) =-183915a(18) =395034a(19) =-848490a(20) =1822474a(21) =-3914487a(22) =8407926a(23) =-18059373a(24) =38789713a(25) =-83316384a(26) =178955184a(27) =-384377664a(28) =825604417a(29) =-1773314928