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

Terms

a(0) =1a(1) =-3a(2) =4a(3) =-2a(4) =-4a(5) =12a(6) =-16a(7) =8a(8) =16a(9) =-48a(10) =64a(11) =-32a(12) =-64a(13) =192a(14) =-256a(15) =128a(16) =256a(17) =-768a(18) =1024a(19) =-512a(20) =-1024a(21) =3072a(22) =-4096a(23) =2048a(24) =4096a(25) =-12288a(26) =16384a(27) =-8192a(28) =-16384a(29) =49152