Expansion of x^4*(1-2*x-2*x^2)/(1-4*x+x^4-2*x^5-2*x^6).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =2a(6) =6a(7) =24a(8) =95a(9) =380a(10) =1520a(11) =6072a(12) =24253a(13) =96870a(14) =386910a(15) =1545368a(16) =6172403a(17) =24653392a(18) =98468904a(19) =393297808a(20) =1570883385a(21) =6274315690a(22) =25060445446a(23) =100094728568a(24) =399791564311