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 A139704 #3 Mar 30 2012 17:39:33 %S A139704 10,12,13,14,15,16,17,18,19,20,21,23,24,25,26,27,28,29,30,31,32,34,35, %T A139704 36,37,38,39,40,41,42,43,45,46,47,48,49,50,51,52,53,54,56,57,58,59,60, %U A139704 61,62,63,64,65,67,68,69,70,71,72,73,74,75,76,78,79,80,81,82,83,84,85 %N A139704 Nearly palindromic numbers: non-palindromes that can be made palindromic by inserting an extra digit. %C A139704 Digits may be inserted at the beginning, middle, or end. However, a zero may not be inserted at the beginning. %C A139704 Differs from A043638: 110, 220, 330, 440, 550, 660, 770, 880, 990, 1100, 1110 etc. are in A043638 but not here. 1010, 1011, 1012, 1013 etc. are here but not in A043638. - _R. J. Mathar_, May 31 2008 %e A139704 The first term 10 can be made palindromic by adding 1 to the end of it to form 101. %Y A139704 Cf. A002113, A139705, A043638. %K A139704 easy,nonn,base %O A139704 1,1 %A A139704 Jono Henshaw (jjono(AT)hotmail.com), Apr 30 2008