Expansion of (1 + 2*x)/(1 + 4*x^2)^(3/2).

Terms

a(0) =1a(1) =2a(2) =-6a(3) =-12a(4) =30a(5) =60a(6) =-140a(7) =-280a(8) =630a(9) =1260a(10) =-2772a(11) =-5544a(12) =12012a(13) =24024a(14) =-51480a(15) =-102960a(16) =218790a(17) =437580a(18) =-923780a(19) =-1847560a(20) =3879876a(21) =7759752a(22) =-16224936a(23) =-32449872a(24) =67603900a(25) =135207800a(26) =-280816200a(27) =-561632400a(28) =1163381400a(29) =2326762800