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 A082265 #5 Dec 05 2013 19:56:12 %S A082265 1,11,10101,202,11111,1221,12121,2222,13131,4114,20702,6006,22522, %T A082265 12821,25152,14641,32723,16461,35353,25652,43734,35653,52925,46464, %U A082265 62926,58085,73737,75457,85358,92829 %N A082265 n-th largest palindrome whose digit sum is n. %e A082265 The palindromes with digit sum 3 are 3, 111, 10101, ...; the third one is 10101. %Y A082265 Main diagonal of A082264. Cf. A082266. %K A082265 base,nonn %O A082265 1,2 %A A082265 _Amarnath Murthy_, Apr 12 2003 %E A082265 Edited and corrected by _Franklin T. Adams-Watters_, Apr 26 2006