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%I #10 Sep 28 2023 10:05:21
%S 1,21,285,3185,31941,299481,2685565,23352945,198684981,1663903241,
%T 13774041645,113050606305,921961387621,7483064823801,60518933442525,
%U 488128819261265,3929148977523861,31579173926461161
%N Expansion of 1/((1-2x)(1-5x)(1-6x)(1-8x)).
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (21, -156, 476, -480).
%F a(n) = (2*8^(n+3)-9*6^(n+3)+8*5^(n+3)-2^(n+3))/72. [_Yahia Kahloune_, May 25 2013]
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_.
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