Expansion of 1/sqrt(1-4*x-36*x^2).

Terms

a(0) =1a(1) =2a(2) =24a(3) =128a(4) =1096a(5) =7632a(6) =60864a(7) =461568a(8) =3648096a(9) =28551872a(10) =226695424a(11) =1799989248a(12) =14380907776a(13) =115126211072a(14) =924791445504