Expansion of (1-x)/(1 + 6*x - 3*x^2).

Terms

a(0) =1a(1) =-7a(2) =45a(3) =-291a(4) =1881a(5) =-12159a(6) =78597a(7) =-508059a(8) =3284145a(9) =-21229047a(10) =137226717a(11) =-887047443a(12) =5733964809a(13) =-37064931183a(14) =239591481525