%I A023319
%S A023319 2207,126107,230567,366347,590207,788027,831167,919067,985937,1111427,
%T A023319 1154567,1170857,1367507,1463597,1624757,1934417,2034797,2468027,2502767,
%U A023319 2545307,3019787,3287027,3385817,3675197,3692207,4087757,4565927,4600577
%N A023319 Numbers n such that n remains prime through 4 iterations of function 
               f(x) = 8x + 1.
%Y A023319 Sequence in context: A004971 A037210 A114360 this_sequence A043659 A031772 
               A031635
%Y A023319 Adjacent sequences: A023316 A023317 A023318 this_sequence A023320 A023321 
               A023322
%K A023319 nonn
%O A023319 1,1
%A A023319 David W. Wilson (davidwwilson(AT)comcast.net)