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

Terms

a(0) =1a(1) =1a(2) =5a(3) =4a(4) =19a(5) =15a(6) =71a(7) =56a(8) =265a(9) =209a(10) =989a(11) =780a(12) =3691a(13) =2911a(14) =13775a(15) =10864a(16) =51409a(17) =40545a(18) =191861a(19) =151316a(20) =716035a(21) =564719a(22) =2672279a(23) =2107560a(24) =9973081a(25) =7865521a(26) =37220045a(27) =29354524a(28) =138907099a(29) =109552575