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

Terms

a(0) =1a(1) =0a(2) =2a(3) =1a(4) =6a(5) =5a(6) =19a(7) =21a(8) =62a(9) =82a(10) =207a(11) =308a(12) =703a(13) =1131a(14) =2417a(15) =4096a(16) =8382a(17) =14705a(18) =29242a(19) =52497a(20) =102431a(21) =186733a(22) =359790a(23) =662630a(24) =1266103a(25) =2347680a(26) =4460939a(27) =8309143a(28) =15730497a(29) =29388368