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

Terms

a(0) =1a(1) =0a(2) =4a(3) =12a(4) =48a(5) =192a(6) =768a(7) =3072a(8) =12288a(9) =49152a(10) =196608a(11) =786432a(12) =3145728a(13) =12582912a(14) =50331648a(15) =201326592a(16) =805306368a(17) =3221225472a(18) =12884901888a(19) =51539607552a(20) =206158430208a(21) =824633720832