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

Terms

a(0) =3a(1) =1a(2) =2a(3) =7a(4) =7a(5) =12a(6) =23a(7) =33a(8) =54a(9) =91a(10) =143a(11) =232a(12) =379a(13) =609a(14) =986a(15) =1599a(16) =2583a(17) =4180a(18) =6767a(19) =10945a(20) =17710a(21) =28659a(22) =46367a(23) =75024a(24) =121395a(25) =196417a(26) =317810a(27) =514231a(28) =832039a(29) =1346268