This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A157869 #5 Mar 31 2012 10:26:07 %S A157869 2,3,5,7,131,151,353,727,929,10301,10501,11311,13331,19391,35753, %T A157869 36263,36563,37573,38783,70207,72227,72727,74747,75557,76367,90709, %U A157869 94349,96269,1003001,1062601,1082801,1085801,1093901,1123211,1175711,1177711 %N A157869 Palindromic primes having both a prime middle digit and a prime digital root. %C A157869 Subsequence of A076611. %Y A157869 A002385, A157868 %K A157869 nonn,base,less %O A157869 1,1 %A A157869 _Lekraj Beedassy_, Mar 08 2009 %E A157869 Corrected and extended by _Ray Chandler_, Mar 12 2009