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

Terms

a(0) =1a(1) =0a(2) =-1a(3) =2a(4) =0a(5) =-4a(6) =8a(7) =0a(8) =-16a(9) =32a(10) =0a(11) =-64a(12) =128a(13) =0a(14) =-256a(15) =512a(16) =0a(17) =-1024a(18) =2048a(19) =0a(20) =-4096a(21) =8192a(22) =0a(23) =-16384a(24) =32768a(25) =0a(26) =-65536a(27) =131072a(28) =0a(29) =-262144