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

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =1a(5) =4a(6) =5a(7) =6a(8) =13a(9) =16a(10) =25a(11) =42a(12) =57a(13) =92a(14) =141a(15) =206a(16) =325a(17) =488a(18) =737a(19) =1138a(20) =1713a(21) =2612a(22) =3989a(23) =6038a(24) =9213a(25) =14016a(26) =21289a(27) =32442a(28) =49321a(29) =75020