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

Terms

a(0) =1a(1) =3a(2) =7a(3) =13a(4) =23a(5) =39a(6) =65a(7) =107a(8) =175a(9) =285a(10) =463a(11) =751a(12) =1217a(13) =1971a(14) =3191a(15) =5165a(16) =8359a(17) =13527a(18) =21889a(19) =35419a(20) =57311a(21) =92733a(22) =150047a(23) =242783a(24) =392833a(25) =635619a(26) =1028455a(27) =1664077a(28) =2692535a(29) =4356615