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%I #7 May 29 2018 13:51:13
%S 1,1,2,0,1,-3,2,-4,9,-7,18,-24,33,-59,82,-124,201,-287,450,-688,1025,
%T -1587,2402,-3636,5577,-8439,12850,-19592,29729,-45291,68914,-104748,
%U 159497,-242575,368994,-561568,854145,-1299555,1977282,-3007844,4576393,-6962407,10592082,-16115192
%N Expansion of (1-x)^(-1)/(1-x^2+2*x^3).
%C Diagonal sums of Riordan array (1/(1-x),x(1-2x)). - _Paul Barry_, Jul 18 2005
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (1,1,-3,2).
%K sign,easy
%O 0,3
%A _N. J. A. Sloane_, Nov 17 2002
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