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

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =6a(6) =11a(7) =17a(8) =27a(9) =45a(10) =72a(11) =116a(12) =189a(13) =305a(14) =493a(15) =799a(16) =1292a(17) =2090a(18) =3383a(19) =5473a(20) =8855a(21) =14329a(22) =23184a(23) =37512a(24) =60697a(25) =98209a(26) =158905a(27) =257115a(28) =416020a(29) =673134