Expansion of x*(2 - 7*x + 2*x^2)/((1-x)*(1-4*x)*(1-2*x)).

Terms

a(0) =2a(1) =7a(2) =23a(3) =79a(4) =287a(5) =1087a(6) =4223a(7) =16639a(8) =66047a(9) =263167a(10) =1050623a(11) =4198399a(12) =16785407a(13) =67125247a(14) =268468223a(15) =1073807359a(16) =4295098367a(17) =17180131327a(18) =68720001023a(19) =274878955519