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 A123586 #2 Mar 30 2012 17:35:17 %S A123586 1,2,3,4,6,8,11,12,14,18,19,22,24,30,32,35,39,44,47,48,53,54,58,60,66, %T A123586 69,70,75,76,77,79,84,87,90,94,95,96,102,103,106,108,110,115,116,120, %U A123586 132,134,137,139,140,143,147,149,152,158,159,163,167,168,174,175,176 %N A123586 Numbers that are not palindromes of 3 or more digits in some base b >= 2. %Y A123586 Cf. A114255 (complement), A016038. %K A123586 base,easy,nonn %O A123586 1,2 %A A123586 _Franklin T. Adams-Watters_, Nov 13 2006