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

Terms

a(0) =1a(1) =-2a(2) =-8a(3) =-8a(4) =16a(5) =64a(6) =64a(7) =-128a(8) =-512a(9) =-512a(10) =1024a(11) =4096a(12) =4096a(13) =-8192a(14) =-32768a(15) =-32768a(16) =65536a(17) =262144a(18) =262144a(19) =-524288a(20) =-2097152a(21) =-2097152a(22) =4194304a(23) =16777216a(24) =16777216a(25) =-33554432a(26) =-134217728a(27) =-134217728a(28) =268435456a(29) =1073741824