Expansion of -(1+x+3*x^2+x^3)/((x^2+4*x+1)*(x^2-2*x-1)).

Terms

a(0) =1a(1) =-5a(2) =25a(3) =-107a(4) =433a(5) =-1697a(6) =6529a(7) =-24839a(8) =93841a(9) =-352973a(10) =1323961a(11) =-4957139a(12) =18539041a(13) =-69282185a(14) =258790465a(15) =-966364367a(16) =3607837153a(17) =-13467809237a(18) =50270219929a(19) =-187629535739a(20) =700287673681