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

Terms

a(0) =1a(1) =0a(2) =3a(3) =2a(4) =11a(5) =14a(6) =47a(7) =78a(8) =217a(9) =408a(10) =1039a(11) =2086a(12) =5065a(13) =10560a(14) =24931a(15) =53194a(16) =123403a(17) =267222a(18) =612903a(19) =1340222a(20) =3050679a(21) =6714946a(22) =15205967a(23) =33622158a(24) =75864835a(25) =168275790a(26) =378743151a(27) =841959974a(28) =1891648931a(29) =4211866694