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 A082264 #5 Dec 05 2013 19:56:12 %S A082264 1,2,11,3,111,10101,4,22,121,202,5,131,212,10301,11111,6,33,141,222, %T A082264 303,1221,7,151,232,313,10501,11311,12121,8,44,161,242,323,404,1331, %U A082264 2222,9,171,252,333,414,10701,11511,12321,13131,55,181,262,343,424,505,1441,2332,3223,4114 %N A082264 Triangle whose n-th row contains n smallest palindromes with a digit sum of n. %e A082264 The triangle starts: %e A082264 1 %e A082264 2 11 %e A082264 3 111 10101 %e A082264 4 22 121 202 %e A082264 5 131 212 10301 11111 %e A082264 6 33 141 222 303 1221 %e A082264 ... %Y A082264 Cf. A082265, A082266. %K A082264 base,nonn,tabl %O A082264 1,2 %A A082264 _Amarnath Murthy_, Apr 12 2003 %E A082264 Edited and corrected by _Franklin T. Adams-Watters_, Apr 26 2006