Search: id:A138539
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%I A138539
%S A138539 2,3,5,7,13,17,19,37,41,43,61,73,89,97,101,109,113,157,163,181,193,233,
%T A138539 241,257,277,281,313,337,349,353,397,401,409,421,433,449,457,461,487,
%U A138539 521,541,577,593,601,613,617,641,661,673,701,733,757,761,769,821,829
%N A138539 Primes p_n for which A140141(n) < 2p_n, where p_n = n-th prime (A000040).
%C A138539 Apparently this is the union of {2} and A058341. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), 
               Jul 03 2009]
%Y A138539 Cf. A140141, A039649, A000010, A000040.
%Y A138539 Sequence in context: A109799 A152961 A109461 this_sequence A090422 A005109 
               A080608
%Y A138539 Adjacent sequences: A138536 A138537 A138538 this_sequence A138540 A138541 
               A138542
%K A138539 nonn
%O A138539 1,1
%A A138539 Vladimir Shevelev (shevelev(AT)bgu.ac.il), May 10 2008
%E A138539 Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), 
               May 20 2008

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