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

Terms

a(0) =1a(1) =0a(2) =-2a(3) =-8a(4) =-26a(5) =-80a(6) =-244a(7) =-752a(8) =-2362a(9) =-7584a(10) =-24892a(11) =-83376a(12) =-284324a(13) =-984672a(14) =-3455144a(15) =-12259168a(16) =-43908026a(17) =-158531392a(18) =-576352364a(19) =-2107982128a(20) =-7750490636a(21) =-28629222112a(22) =-106190978264a(23) =-395347083808