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

Terms

a(0) =0a(1) =1a(2) =1a(3) =3a(4) =3a(5) =9a(6) =9a(7) =29a(8) =29a(9) =99a(10) =99a(11) =351a(12) =351a(13) =1275a(14) =1275a(15) =4707a(16) =4707a(17) =17577a(18) =17577a(19) =66197a(20) =66197a(21) =250953a(22) =250953a(23) =956385a(24) =956385a(25) =3660541a(26) =3660541a(27) =14061141a(28) =14061141a(29) =54177741