Expansion of 1/sqrt(1-6x+13x^2).

Terms

a(0) =1a(1) =3a(2) =7a(3) =9a(4) =-21a(5) =-207a(6) =-911a(7) =-2769a(8) =-5213a(9) =2457a(10) =74997a(11) =400491a(12) =1409109a(13) =3323583a(14) =2219343a(15) =-27453951a(16) =-186624333a(17) =-750905127a(18) =-2088947819a(19) =-2955863589a(20) =8506703569a(21) =86421384387a(22) =401183114163