Expansion of x*(1+9*x+2*x^2)/((1-x)*(1-3*x+x^2)).

Terms

a(0) =1a(1) =13a(2) =50a(3) =149a(4) =409a(5) =1090a(6) =2873a(7) =7541a(8) =19762a(9) =51757a(10) =135521a(11) =354818a(12) =928945a(13) =2432029a(14) =6367154a(15) =16669445a(16) =43641193a(17) =114254146a(18) =299121257a(19) =783109637a(20) =2050207666a(21) =5367513373a(22) =14052332465a(23) =36789484034a(24) =96316119649a(25) =252158874925