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

Terms

a(0) =0a(1) =0a(2) =0a(3) =2a(4) =16a(5) =88a(6) =416a(7) =1824a(8) =7680a(9) =31616a(10) =128512a(11) =518656a(12) =2084864a(13) =8361984a(14) =33497088a(15) =134094848a(16) =536608768a(17) =2146926592a(18) =8588754944a(19) =34357248000a(20) =137433710592a(21) =549744803840