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

Terms

a(0) =1a(1) =1a(2) =5a(3) =9a(4) =33a(5) =73a(6) =233a(7) =569a(8) =1693a(9) =4353a(10) =12477a(11) =32985a(12) =92637a(13) =248673a(14) =690549a(15) =1869513a(16) =5158881a(17) =14033161a(18) =38587193a(19) =105246041a(20) =288818305a(21) =788939769a(22) =2162574513a(23) =5912375033a(24) =16196093881a(25) =44300854441a(26) =121311490937