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

Terms

a(0) =1a(1) =2a(2) =5a(3) =14a(4) =41a(5) =118a(6) =341a(7) =986a(8) =2849a(9) =8234a(10) =23797a(11) =68774a(12) =198761a(13) =574430a(14) =1660133a(15) =4797874a(16) =13866113a(17) =40073810a(18) =115815461a(19) =334712894a(20) =967338217a(21) =2795659334a(22) =8079605429a(23) =23350493066a(24) =67484177441a(25) =195032892538a(26) =563655520661