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

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =5a(6) =15a(7) =36a(8) =78a(9) =162a(10) =331a(11) =671a(12) =1353a(13) =2718a(14) =5448a(15) =10908a(16) =21829a(17) =43673a(18) =87363a(19) =174744a(20) =349506a(21) =699030a(22) =1398079a(23) =2796179a(24) =5592381a(25) =11184786a(26) =22369596a(27) =44739216a(28) =89478457a(29) =178956941