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 A049364 #7 Apr 03 2014 11:35:03 %S A049364 2,572,8410815,59609420837337474 %N A049364 Smallest number that is digitally balanced in all bases 2, 3, ... n. %H A049364 Joe K. Crump, <a href="http://www.immortaltheory.com/NumberTheory/">Joe's Number Theory Web</a>. %Y A049364 Cf. A031443, A049354, A049355, etc. %Y A049364 See A065963 for another version. %K A049364 nonn,nice,base %O A049364 2,1 %A A049364 _Harvey P. Dale_ %E A049364 a(5) from Joe K. Crump (joecr(AT)carolina.rr.com), Aug 29 2000, who reports that the next term is greater than 22185312344622607538702383625075608111920737991870030337. %E A049364 a(6) > 5^434 and would be too large to include. This result comes from combining Joe K. Crump's algorithm with the observation that digitally balanced numbers in base 5 are all even and digitally balanced numbers in base 3 are even iff they are of even length. - _Martin Fuller_, Nov 27 2006