%I A117698
%S A117698 2,111,212,12121,20102,22122,1001001,1021201,1111111,1201021,1221221,
%T A117698 2001002,2021202,2101012,2111112,2121212,2201022,2211122,102111201,
%U A117698 110111011
%N A117698 Palindromic primes in base 3 (written in base 3).
%H A117698 Eric Weisstein: <a href="http://mathworld.wolfram.com/PalindromicPrime.html">
               Palindromic Prime</a>.
%Y A117698 Cf. A029971.
%Y A117698 Sequence in context: A093425 A091508 A075399 this_sequence A024341 A012528 
               A024342
%Y A117698 Adjacent sequences: A117695 A117696 A117697 this_sequence A117699 A117700 
               A117701
%K A117698 nonn
%O A117698 1,1
%A A117698 Martin Renner (martin.renner(AT)gmx.net), Apr 13 2006