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

Terms

a(0) =1a(1) =-2a(2) =3a(3) =-3a(4) =2a(5) =1a(6) =-5a(7) =10a(8) =-13a(9) =13a(10) =-6a(11) =-7a(12) =27a(13) =-46a(14) =59a(15) =-51a(16) =18a(17) =49a(18) =-133a(19) =218a(20) =-253a(21) =205a(22) =-22a(23) =-279a(24) =667a(25) =-990a(26) =1099a(27) =-755a(28) =-126a(29) =1569