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

Terms

a(0) =1a(1) =-1a(2) =3a(3) =-6a(4) =14a(5) =-30a(6) =67a(7) =-147a(8) =325a(9) =-716a(10) =1580a(11) =-3484a(12) =7685a(13) =-16949a(14) =37383a(15) =-82450a(16) =181850a(17) =-401082a(18) =884615a(19) =-1951079a(20) =4303241a(21) =-9491096a(22) =20933272a(23) =-46169784a(24) =101830665a(25) =-224594601a(26) =495358987a(27) =-1092548638a(28) =2409691878a(29) =-5314742742