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%I #7 Jun 13 2015 00:49:05
%S 1,20,263,2890,28833,271320,2457211,21670550,187473605,1598611300,
%T 13480822719,112690635330,935435043817,7720854845360,63428474542787,
%U 519059289782830,4233894901355469,34441103679651900
%N Expansion of 1/((1-2x)(1-3x)(1-7x)(1-8x)).
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (20,-137,370,-336).
%F a(n) = -2^(n+2)/15 +4*8^(n+2)/15 +3^(n+3)/20 -7^(n+3)/20. - _R. J. Mathar_, Jun 04 2013
%K nonn
%O 0,2
%A _N. J. A. Sloane_.
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