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

Terms

a(0) =1a(1) =8a(2) =36a(3) =128a(4) =400a(5) =1152a(6) =3136a(7) =8192a(8) =20736a(9) =51200a(10) =123904a(11) =294912a(12) =692224a(13) =1605632a(14) =3686400a(15) =8388608a(16) =18939904a(17) =42467328a(18) =94633984a(19) =209715200a(20) =462422016a(21) =1015021568a(22) =2218786816a(23) =4831838208a(24) =10485760000a(25) =22682796032a(26) =48922361856a(27) =105226698752a(28) =225754218496