%I #5 Jun 13 2015 00:52:41
%S 1,-1,-3,1,6,-1,-10,1,15,-1,-21,1,28,-1,-36,1,45,-1,-55,1,66,-1,-78,1,
%T 91,-1,-105,1,120,-1,-136,1,153,-1,-171,1,190,-1,-210,1,231,-1,-253,1,
%U 276,-1,-300,1,325,-1,-351,1,378,-1,-406,1,435
%N Hankel transform of A145062.
%H <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (0,-3,0,-3,0,-1)
%F G.f.: (1-x-2x^3-x^5)/(1+x^2)^3; a(n)=C(n/2+2,2)(-1)^(n/2)(1+(-1)^n)/2-(-1)^((n-1)/2)(1-(-1)^n)/2;
%K easy,sign
%O 0,3
%A _Paul Barry_, Sep 30 2008