Expansion of (1+x+5x^2+2x^3) / (1-4x^2+x^4).

Terms

a(0) =1a(1) =1a(2) =1a(3) =-2a(4) =-5a(5) =7a(6) =19a(7) =-26a(8) =-71a(9) =97a(10) =265a(11) =-362a(12) =-989a(13) =1351a(14) =3691a(15) =-5042a(16) =-13775a(17) =18817a(18) =51409a(19) =-70226a(20) =-191861a(21) =262087a(22) =716035a(23) =-978122a(24) =-2672279a(25) =3650401a(26) =9973081a(27) =-13623482a(28) =-37220045a(29) =50843527