Expansion of 1/(1 - 2*x - 7*x^2)^(3/2).

Terms

a(0) =1a(1) =3a(2) =18a(3) =70a(4) =315a(5) =1281a(6) =5348a(7) =21708a(8) =88245a(9) =355135a(10) =1425270a(11) =5692050a(12) =22666735a(13) =89986365a(14) =356400840a(15) =1408459928a(16) =5555679849a(17) =21877337979a(18) =86020384730a(19) =337769595870