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%I #10 Jul 11 2013 09:51:10
%S 1,33,700,12150,187951,2698923,36799570,483082800,6161352901,
%T 76830423813,940920228040,11355049670250,135378462029851,
%U 1597705036844703,18694490136746110,217145575509718500
%N Expansion of 1/((1-3x)(1-9x)(1-10x)(1-11x)).
%H Vincenzo Librandi, <a href="/A028105/b028105.txt">Table of n, a(n) for n = 0..200</a>
%F a(n) = (21*11^(n+3)-48*10^(n+3)+28*9^(n+3)-3^(n+3))/336. [_Yahia Kahloune_, Jun 11 2013]
%t CoefficientList[Series[1 / ((1 - 3 x) (1 - 9 x) (1 - 10 x) (1 - 11 x)), {x, 0, 20}], x] (* _Vincenzo Librandi_, Jul 11 2013 *)
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_.
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