Expansion of x/(1 - 7*x - 4*x^2).

Terms

a(0) =0a(1) =1a(2) =7a(3) =53a(4) =399a(5) =3005a(6) =22631a(7) =170437a(8) =1283583a(9) =9666829a(10) =72802135a(11) =548282261a(12) =4129184367a(13) =31097419613a(14) =234198674759