%I #3 Mar 30 2012 18:56:00
%S 0,0,0,0,1,0,0,0,1,0,0,1,0,1,0,0,1,0,0,1,1,0,1,0,0,0,2,0,0,1,0,1,0,1,
%T 1,0,0,1,1,0,0,1,0,1,1,0,2,0,0,0,1,0,1,1,0,1,1,0,0,1,1,1,0,0,1,1,0,1,
%U 1,0,0,2,0,0,0,0,3,0,1,1,0,0,1,1,0,0,1,0,1,2,0,0,1,0,1,1,1,1,0,0,0,2,0,1,0,0,2,1,0,1,1
%N a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s = A023531.
%K nonn
%O 2,27
%A _Clark Kimberling_
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