%I A032726
%S A032726 0,3,4,7,9,10,12,22,24,25,27,28,31,39,40,42,43,45,48,49,54,55,57,60,61,
%T A032726 66,69,70,75,78,87,88,94,97,99,105,106,111,114,115,123,127,129,132,136,
%U A032726 139,148,151,154,157,168,169,171,177,178,183,190,193,195,196,204
%N A032726 n prefixed by '1' and followed by '9' is a prime.
%Y A032726 Sequence in context: A026140 A059010 A066928 this_sequence A029739 A005098 
               A002977
%Y A032726 Adjacent sequences: A032723 A032724 A032725 this_sequence A032727 A032728 
               A032729
%K A032726 nonn,base
%O A032726 0,2
%A A032726 Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.