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 A029982 #17 Aug 11 2024 14:41:30
%S A029982 2,3,5,7,11,13,241,271,331,421,467,557,587,617,647,919,1009,1039,1069,
%T A029982 1597,1627,1657,1747,1777,1823,1913,1973,2003,2531,2591,2621,2953,
%U A029982 3209,3299,3329,3359,52201,53101,53551,56041,56941,60331,61471
%N A029982 Palindromic primes in base 15.
%H A029982 John Cerkan, <a href="/A029982/b029982.txt">Table of n, a(n) for n = 1..10000</a>
%H A029982 P. De Geest, <a href="https://www.worldofnumbers.com/palpri.htm">World!Of Palindromic Primes</a>
%t A029982 pal15Q[n_]:=Module[{idn15=IntegerDigits[n,15]}, idn15==Reverse[idn15]]; Select[Prime[Range[7500]],pal15Q] (* _Harvey P. Dale_, Mar 01 2011 *)
%K A029982 nonn,base
%O A029982 1,1
%A A029982 _Patrick De Geest_