Expansion of (1-8x-8x^3)/(1-2x+4x^2)^2.

Terms

a(0) =1a(1) =-4a(2) =-28a(3) =-56a(4) =32a(5) =416a(6) =832a(7) =-256a(8) =-4864a(9) =-9728a(10) =2048a(11) =51200a(12) =102400a(13) =-16384a(14) =-507904a(15) =-1015808a(16) =131072a(17) =4849664a(18) =9699328a(19) =-1048576a(20) =-45088768a(21) =-90177536a(22) =8388608a(23) =411041792a(24) =822083584a(25) =-67108864a(26) =-3690987520a(27) =-7381975040