Expansion of (1+3x)/((1-x)(1-10x)).

Terms

a(0) =1a(1) =14a(2) =144a(3) =1444a(4) =14444a(5) =144444a(6) =1444444a(7) =14444444a(8) =144444444a(9) =1444444444a(10) =14444444444a(11) =144444444444