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 A083960 #12 Feb 14 2015 12:35:21 %S A083960 1,2,3,4,5,6,7,8,9,1,11,2112,131131,414414,5115,61616,7111117,8118, %T A083960 99199,2,1121211,22,32223,4224,525,262262,22222722222,828828,922229,3, %U A083960 133331,23232,33,4333334,535535,6336,333777333,88388,393393,4 %N A083960 Smallest palindromic multiple of (n with trailing 0's omitted, A004151) using only nonzero digits of n; all digits must appear; or 0 if no such number exists. %C A083960 If one generates all palindromes using all the digits of n with k digits where k starts with the number of digits of n and increases k until one finds a multiple of n, one finds such palindromic multiples much faster than looking for palindromes among the multiples of n. - _W. Edwin Clark_ %Y A083960 Cf. A061816, A083961, A004151. %K A083960 base,nonn %O A083960 1,2 %A A083960 _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 20 2003 %E A083960 More terms from _W. Edwin Clark_, May 24 2003 %E A083960 Corrected by _David Wasserman_, Dec 06 2004