Expansion of (1 + 8*x) / sqrt(1 - 4*x).

Terms

a(0) =1a(1) =10a(2) =22a(3) =68a(4) =230a(5) =812a(6) =2940a(7) =10824a(8) =40326a(9) =151580a(10) =573716a(11) =2183480a(12) =8347612a(13) =32033848a(14) =123321400a(15) =476050320a(16) =1842020550a(17) =7142249340a(18) =27743985060a(19) =107946346200a(20) =420608639220