%I A073881
%S A073881 1,3,7,7,13,13,19,19,19,19,29,29,37,37,37,37,43,43,53,53,53,53,61,61,
%T A073881 61,61,61,61,71,71,79,79,79,79,79,79,89,89,89,89,101,101,107,107,107,
%U A073881 107,113,113,113,113,113,113,131,131,131,131,131,131,139,139,151,151
%N A073881 a(n) = smallest number m (obviously prime) such that pi(m) = 2*pi(n).
%Y A073881 Sequence in context: A119644 A109386 A024612 this_sequence A137315 A139795 
               A118259
%Y A073881 Adjacent sequences: A073878 A073879 A073880 this_sequence A073882 A073883 
               A073884
%K A073881 nonn
%O A073881 0,2
%A A073881 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 16 2002
%E A073881 More terms from Jason Earls (zevi_35711(AT)yahoo.com), Aug 22 2002