Expansion of (1-x)/(1 - x - x^2 - 3*x^3 + 3*x^4).

Terms

a(0) =1a(1) =0a(2) =1a(3) =4a(4) =2a(5) =9a(6) =20a(7) =23a(8) =64a(9) =120a(10) =193a(11) =436a(12) =797a(13) =1452a(14) =2978a(15) =5513a(16) =10456a(17) =20547a(18) =38608a(19) =73984a(20) =142865a(21) =271032a(22) =520025a(23) =997700a(24) =1902226a(25) =3646905a(26) =6982156a(27) =13342639a(28) =25558832a(29) =48907224