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%I #3 Mar 30 2012 18:56:00
%S 2,0,0,2,3,4,5,2,3,4,5,6,9,11,13,5,6,7,10,12,14,16,18,20,22,11,13,15,
%T 17,19,21,23,25,29,32,35,38,20,22,24,26,28,32,35,38,41,44,47,50,53,56,
%U 31,35,38,41,44,47,50,53,56,59,62,65,70,74,78,82,50,53,56,59,62,65,68,71,76,80,84,88
%N a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers >= 2), t = A023531.
%K nonn
%O 2,1
%A _Clark Kimberling_
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