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%I #2 Mar 30 2012 18:59:13
%S 1,2,2,4,4,4,5,6,7,6,9,6,9,6,10,8,12,8,14,8,14,8,16,8,16,8,16,8,16,8,
%T 17,10,19,10,21,10,21,10,23
%N Row sums of correlation triangle for Fredholm-Rueppel sequence A036987.
%C If a sequence has g.f. A(x), its correlation triangle has g.f. A(x)A(x*y)/(1-x^2*y). (Observation due to Christian G. Bower).
%F G.f. : (sum{k>=0, x^(2k-1)})^2/(1-x^2); a(n)=sum{k=0..n, sum{j=0..k, A036987(j)}*sum{j=0..n-k, A036987(j)*(-1)^(n-k-j)}}.
%K easy,nonn
%O 0,2
%A _Paul Barry_, Jan 21 2006
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