Expansion of x*(1-4*x-3*x^2)/(1-5*x+5*x^3+x^4).

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =5a(5) =19a(6) =84a(7) =393a(8) =1865a(9) =8886a(10) =42381a(11) =202187a(12) =964640a(13) =4602409a(14) =21958729a(15) =104768258a(16) =499864605a(17) =2384926971a(18) =11378834836a(19) =54290082897a(20) =259025915025