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

Terms

a(0) =1a(1) =-3a(2) =4a(3) =-4a(4) =6a(5) =-12a(6) =20a(7) =-28a(8) =40a(9) =-64a(10) =104a(11) =-160a(12) =240a(13) =-368a(14) =576a(15) =-896a(16) =1376a(17) =-2112a(18) =3264a(19) =-5056a(20) =7808a(21) =-12032a(22) =18560a(23) =-28672a(24) =44288a(25) =-68352a(26) =105472a(27) =-162816a(28) =251392a(29) =-388096