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 A048187 #15 Sep 23 2022 05:20:33 %S A048187 2,5,88,262,292,474,626,818,848,898,2992,4224,4884,6006,6776,6996, %T A048187 8008,8228,8558,8778,8998,20502,20802,21112,21512,21712,21812,22022, %U A048187 22122,22322,22422,22822,23232,23732,24042,24142,24642,24742,24942,25252,25552,25652 %N A048187 Palindromic untouchable numbers. %H A048187 Amiram Eldar, <a href="/A048187/b048187.txt">Table of n, a(n) for n = 1..1554</a> %Y A048187 Intersection of A002113 and A005114. %K A048187 nonn,base %O A048187 1,1 %A A048187 _Naohiro Nomoto_ %E A048187 a(22)-a(42) from _Donovan Johnson_, Aug 12 2011