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

Terms

a(0) =2a(1) =3a(2) =0a(3) =-4a(4) =-5a(5) =-2a(6) =2a(7) =3a(8) =0a(9) =-4a(10) =-5a(11) =-2a(12) =2a(13) =3a(14) =0a(15) =-4a(16) =-5a(17) =-2a(18) =2a(19) =3a(20) =0a(21) =-4a(22) =-5a(23) =-2a(24) =2a(25) =3a(26) =0a(27) =-4a(28) =-5a(29) =-2