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

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =-3a(4) =-6a(5) =-14a(6) =-31a(7) =-70a(8) =-157a(9) =-353a(10) =-793a(11) =-1782a(12) =-4004a(13) =-8997a(14) =-20216a(15) =-45425a(16) =-102069a(17) =-229347a(18) =-515338a(19) =-1157954a(20) =-2601899a(21) =-5846414a(22) =-13136773a(23) =-29518061a(24) =-66326481a(25) =-149034250a(26) =-334876920a(27) =-752461609a(28) =-1690765888a(29) =-3799116465