%I A057872
%S A057872 0,1,2,2,3,3,5,5,5,5,8,8,10,10,10,10,13,13,16,16,16,16,19,19,19,19,19,
               19,
%T A057872 23,23,26,26,26,26,26,26,30,30,30,30,33,33,37,37,37,37,41,41,41,41,41,
               41,
%U A057872 45,45,45,45,45,45,49,49,53,53,53,53,53,53,57,57,57,57,62,62,66,66,66,
               66
%N A057872 A version of the Chebyshev function theta(n): a(n) = round(Sum_{primes 
               p <= n } log(p)).
%C A057872 See A035158, which is the main entry for this function.
%C A057872 The old entry with this sequence number was a duplicate of A053632.
%Y A057872 Sequence in context: A167755 A033302 A072729 this_sequence A059974 A045767 
               A108221
%Y A057872 Adjacent sequences: A057869 A057870 A057871 this_sequence A057873 A057874 
               A057875
%K A057872 nonn
%O A057872 1,3
%A A057872 N. J. A. Sloane (njas(AT)research.att.com), Oct 02 2008