Expansion of (1+x^2)^2/(1+x^2-2x^3+x^4+x^6).

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =-1a(5) =0a(6) =3a(7) =-4a(8) =-3a(9) =8a(10) =-7a(11) =-10a(12) =23a(13) =-8a(14) =-33a(15) =56a(16) =1a(17) =-104a(18) =121a(19) =58a(20) =-297a(21) =232a(22) =291a(23) =-780a(24) =349a(25) =1072a(26) =-1903a(27) =174a(28) =3407a(29) =-4272