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Expansion of -2*x / ( (2*x-1)*(4*x^2+3*x+1) ).
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%I #20 Feb 14 2018 03:16:24

%S 2,-2,6,6,-10,70,-42,102,374,-506,2070,-90,182,16198,-16554,50406,

%T 46070,-77690,573078,-359898,884534,2980294,-4090410,17127270,

%U -1465738,2996998,131089686,-136821594,422976950,352097350,-600716202,4688726502,-3073380106,7645103494,23717948310,-33014782170,141611506742

%N Expansion of -2*x / ( (2*x-1)*(4*x^2+3*x+1) ).

%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (-1,2,8).

%F a(n) = -a(n-1) +2*a(n-2) +8*a(n-3).

%F 7*a(n) = 2^(n+1) -2*(-1)^n*(2*A049072(n-1)+A049072(n)). - _R. J. Mathar_, Dec 01 2011

%K sign,easy

%O 1,1

%A _Krishnamurthy Balasubraniam_, Nov 19 2011

%E Definition from _R. J. Mathar_, Nov 19 2011