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 A045960 #21 Mar 20 2024 03:11:08 %S A045960 2,4,6,22,44,212,262,282,434,474,646,666,818,838,868,2442,2662,2772, %T A045960 4884,4994,6666,6886,8118,8338,20202,20402,21012,21812,22322,22422, %U A045960 22922,23332,23532,24042,25652,26162,26262,26562,26762,27372,28682,40204,40804 %N A045960 Palindromic even lucky numbers. %H A045960 Amiram Eldar, <a href="/A045960/b045960.txt">Table of n, a(n) for n = 1..1066</a> (terms below 10^8) %t A045960 lst = Range[2, 50000, 2]; %t A045960 i = 2; %t A045960 While[i <= (len = Length@lst) && (k = lst[[i]]) <= len, lst = Drop[lst, {k, len, k}]; i++]; %t A045960 Select[lst, PalindromeQ] (* _Jean-François Alcover_, Sep 01 2022, after _Robert G. Wilson v_ in A045954 *) %Y A045960 Intersection of A002113 and A045954. %K A045960 nice,nonn,base %O A045960 1,1 %A A045960 _Felice Russo_ %E A045960 More terms from _David W. Wilson_