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

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =2a(5) =3a(6) =4a(7) =6a(8) =8a(9) =10a(10) =13a(11) =17a(12) =23a(13) =31a(14) =41a(15) =54a(16) =71a(17) =94a(18) =125a(19) =166a(20) =220a(21) =291a(22) =385a(23) =510a(24) =676a(25) =896a(26) =1187a(27) =1572a(28) =2082a(29) =2758