%I #5 Jul 10 2015 19:40:13
%S 1,2,3,3,3,4,4,4,5,5,5,6,6,6,6,7,7,7,7,8,8,8,8,8,9,9,9,9,9,10,10,10,
%T 10,10,11,11,11,11,11,12,12,12,12,12,13,13,13,13,13,13,14,14,14,14,14,
%U 14,15,15,15,15,15,15,16,16,16,16,16,16,17,17,17,17,17
%N A discrete analog of Li(n): ceiling ( Sum_{k=2..n} 1/log_2 (k) ).
%K nonn
%O 2,2
%A _N. J. A. Sloane_
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