Expansion of -x*(x^6+3*x^5+2*x^4-2*x^3-4*x^2+4*x-1)/((1-x)^2*(1-2*x-x^2)^2).

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =14a(5) =40a(6) =111a(7) =301a(8) =803a(9) =2118a(10) =5540a(11) =14397a(12) =37216a(13) =95772a(14) =245505a(15) =627189a(16) =1597413a(17) =4057450a(18) =10280678a(19) =25990933a(20) =65575122a(21) =165138416a(22) =415158963a(23) =1042067549a(24) =2611823431a(25) =6537384302a(26) =16342461128a(27) =40805714573a(28) =101776575332a(29) =253587643300