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Expansion of 1/((1-x)(1-x^2)(1-x^6)(1-x^9)).
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%I #10 Jan 15 2021 11:58:31

%S 1,1,2,2,3,3,5,5,7,8,10,11,14,15,18,20,23,25,30,32,37,40,45,48,55,58,

%T 65,70,77,82,91,96,105,112,121,128,140,147,159,168,180,189,204,213,

%U 228,240,255,267,285,297,315,330

%N Expansion of 1/((1-x)(1-x^2)(1-x^6)(1-x^9)).

%C Number of partitions of n into parts 1, 2, 6 and 9. - _Ilya Gutkovskiy_, May 14 2017

%H <a href="/index/Rec#order_18">Index entries for linear recurrences with constant coefficients</a>, signature (1,1,-1,0,0,1,-1,-1,2,-1,-1,1,0,0,-1,1,1,-1).

%t CoefficientList[Series[1/((1-x)(1-x^2)(1-x^6)(1-x^9)),{x,0,80}],x] (* _Harvey P. Dale_, Jan 15 2021 *)

%K nonn

%O 0,3

%A _N. J. A. Sloane_.