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

Terms

a(0) =1a(1) =0a(2) =-1a(3) =-3a(4) =-2a(5) =3a(6) =11a(7) =12a(8) =-5a(9) =-39a(10) =-58a(11) =-9a(12) =127a(13) =252a(14) =143a(15) =-363a(16) =-1010a(17) =-933a(18) =803a(19) =3756a(20) =4819a(21) =-543a(22) =-12874a(23) =-21969a(24) =-8009a(25) =39708a(26) =91655a(27) =67965a(28) =-103106a(29) =-354381