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%I #4 May 12 2015 18:38:47
%S 11,31,41,211,1291,1301,279941,60466181,78364164101,101559956668421,
%T 36845653286788892983291,1326443518324400147398651,
%U 7958661109946400884391941,286511799958070431838109691
%N Prime numbers of the form 6^k +- 5.
%t Select[Sort[Flatten[#+{5,-5}&/@(6^Range[50])]],PrimeQ] (* _Harvey P. Dale_, May 12 2015 *)
%Y Cf. A000040, A000668, A144231, A144232, A144233
%K nonn
%O 1,1
%A _Reikku Kulon_, Sep 15 2008