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

Terms

a(0) =1a(1) =4a(2) =17a(3) =71a(4) =300a(5) =1271a(6) =5383a(7) =22802a(8) =96591a(9) =409165a(10) =1733250a(11) =7342165a(12) =31101909a(13) =131749800a(14) =558101109a(15) =2364154235a(16) =10014718048a(17) =42423026427a(18) =179706823755a(19) =761250321446