%I A117699
%S A117699 2,3,11,101,131,323,10001,11311,12121,13031,13331,30103,31013,31313,
%T A117699 32023,33133,1003001,1013101,1101011,1120211,1123211,1133311,1201021,
%U A117699 1212121,1221221,1302031,1311131,1321231
%N A117699 Palindromic primes in base 4 (written in base 4).
%H A117699 Eric Weisstein: <a href="http://mathworld.wolfram.com/PalindromicPrime.html">
               Palindromic Prime</a>.
%Y A117699 Cf. A029972.
%Y A117699 Sequence in context: A042165 A089921 A056899 this_sequence A065378 A161721 
               A079853
%Y A117699 Adjacent sequences: A117696 A117697 A117698 this_sequence A117700 A117701 
               A117702
%K A117699 nonn
%O A117699 1,1
%A A117699 Martin Renner (martin.renner(AT)gmx.net), Apr 13 2006