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 A084044 #7 Aug 23 2014 14:56:46 %S A084044 1,2,3,4,5,6,7,8,9,0,11,2112,31213,41314,5115,61216,71417,8118,41914, %T A084044 0,12621,22,32223,4224,525,26962,27972,82628,52925,0,31713,23232,33, %U A084044 2243422,53235,6336,43734,83638,93639,0,412214,42924,34443,44,5445 %N A084044 Smallest palindromic multiple of n in which n is a substring (anywhere), or 0 if n = 10k or no such number exists. %C A084044 Conjecture: a(n) = 0 iff n = 10k. Though many terms match, not the same as A077741. %Y A084044 Cf. A084043, A077741. %K A084044 base,nonn %O A084044 1,2 %A A084044 _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 26 2003 %E A084044 Corrected and extended by _Ray Chandler_, Jun 11 2003