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 A046487 #15 Aug 11 2024 14:41:31 %S A046487 1,2,3,33,77,383,21512 %N A046487 Palindromes k such that the sum of the first palindromes up to k is a palindrome. %H A046487 P. De Geest, <a href="https://www.worldofnumbers.com/index.html">World!Of Numbers</a> %F A046487 a(n) = A002113(1+A046486(n)). - _R. J. Mathar_, Sep 09 2015 %e A046487 a(n)=77 so 1+2+3+4+5+6+7+8+9+11+22+33+44+55+66+77 = 353. %Y A046487 Cf. A002113, A046486, A046488. %K A046487 nonn,hard,base %O A046487 1,2 %A A046487 _Patrick De Geest_, Sep 15 1998 %E A046487 Offset changed to 1 by _R. J. Mathar_, Sep 09 2015