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 A229876 #15 Jun 02 2024 15:19:05
%S A229876 2,11,101,191,353,929,13331,16661,17471,19991,36263,38783,70607,72227,
%T A229876 73037,74747,75557,76367,78887,79697,91019,94349,1074701,1082801,
%U A229876 1123211,1180811,1221221,1262621,1287821,1303031,1311131,1328231,1360631,1508051,1532351
%N A229876 Palindromic prime numbers == 2 (mod 9).
%H A229876 Shyam Sunder Gupta, <a href="/A229876/b229876.txt">Table of n, a(n) for n = 1..994</a>
%t A229876 t = {}; Do[z = n*10^(IntegerLength[n] - 1) + FromDigits@Rest@Reverse@IntegerDigits[n]; If[PrimeQ[z] && Mod[z, 9] == 2, AppendTo[t, z]], {n, 1, 99999}]; Insert[t, 11, 2]
%t A229876 Select[Prime[Range[120000]],PalindromeQ[#]&&Mod[#,9]==2&] (* _Harvey P. Dale_, Jun 02 2024 *)
%Y A229876 Cf. A002385, A229875.
%K A229876 nonn,base,less
%O A229876 1,1
%A A229876 _Shyam Sunder Gupta_, Oct 02 2013