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%I #10 Jun 13 2015 00:52:33
%S 0,1,-1,1,2,-2,8,4,8,40,32,112,224,352,896,1600,3200,6784,12800,26368,
%T 52736,103936,210944,418816,837632,1681408,3350528,6713344,13426688,
%U 26828800,53706752,107364352,214728704,429555712,858914816,1718026240,3436052480,6871711744,13744209920
%N a(n) = 2a(n-2) + 4a(n-3), n >= 3.
%H Joshua Zucker, Feb 23 2008, <a href="/A134812/b134812.txt">Table of n, a(n) for n = 0..60</a>
%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (0,2,4).
%F G.f. x*(-1 + x + x^2) / ( (2*x-1)*(2*x^2 + 2*x + 1) ). - _R. J. Mathar_, Aug 11 2012
%F 20*a(n) = 2^n - 6*A078069(n), n>0. - _R. J. Mathar_, Aug 11 2012
%Y Cf. A134654.
%K sign,easy
%O 0,5
%A _Paul Curtz_, Jan 28 2008
%E More terms from _Joshua Zucker_, Feb 23 2008
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