Search: id:A004257
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%I A004257
%S A004257 0,1,2,2,2,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,
%T A004257 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,
%U A004257 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6
%N A004257 log_2 (n) rounded to nearest integer.
%H A004257 T. D. Noe, <a href="b004257.txt">Table of n, a(n) for n=1..10000</a>
%Y A004257 Sequence in context: A132944 A106432 A029836 this_sequence A156684 A070564 
               A072358
%Y A004257 Adjacent sequences: A004254 A004255 A004256 this_sequence A004258 A004259 
               A004260
%K A004257 nonn
%O A004257 1,3
%A A004257 N. J. A. Sloane (njas(AT)research.att.com).

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