Expansion of 1/sqrt(1+4*x+16*x^2).

Terms

a(0) =1a(1) =-2a(2) =-2a(3) =28a(4) =-74a(5) =-92a(6) =1324a(7) =-3656a(8) =-4826a(9) =70228a(10) =-197372a(11) =-267896a(12) =3921724a(13) =-11126936a(14) =-15347432a(15) =225505648a(16) =-643622906a(17) =-897078476a(18) =13214495764a(19) =-37869162392a(20) =-53170602284a(21) =784672445368