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 A093030 #8 Dec 16 2019 09:50:08
%S A093030 1,2,3,4,5,6,7,8,9,5,11,6,1,7,5,8,1,9,1,5,7,22,1,8,5,2,9,7,1,6,1,8,33,
%T A093030 2,7,9,1,2,3,8,1,7,1,44,9,2,1,8,7,5,3,4,1,9,55,8,3,2,1,6,1,2,9,8,5,66,
%U A093030 1,4,3,7,1,9,1,2,5,4,77,6,1,8,9,2,1,7,5,2,3,88,1,9,7,4,3,2,5,8,1,7,99,5,101
%N A093030 Largest palindromic divisor of n.
%H A093030 Amiram Eldar, <a href="/A093030/b093030.txt">Table of n, a(n) for n = 1..10000</a>
%t A093030 a[n_] := Module[{d = Divisors[n]}, k = Length[d]; While[!PalindromeQ[d[[k]]], k--]; d[[k]]]; Array[a, 101] (* _Amiram Eldar_, Dec 16 2019 *)
%Y A093030 Cf. A093888.
%K A093030 base,easy,nonn
%O A093030 1,2
%A A093030 _Jason Earls_, May 07 2004