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 A109032 #13 Oct 19 2017 03:14:42 %S A109032 2,510,10801,8002800,328224963,543132112659030,1625617313969282, %T A109032 976950495904635536636,3608528850368400786036725, %U A109032 633984966211379026884314402,830642837707972528309709136652,311178293035966860075741106050464008245,418859156568815767928583230192107024079856024 %N A109032 a(n) is the largest number such that when written in base n, for each possible k, the number having the first k digits of a(n) is divisible by k. %C A109032 This is not monotonic: a(14) > a(15). %H A109032 Karl W. Heuer, <a href="/A109032/b109032.txt">Table of n, a(n) for n = 2..32</a> %H A109032 MathStackExchange, <a href="http://math.stackexchange.com/questions/411897/find-the-largest-number-having-this-property">Find the largest number having this property</a>, Jan 2013. %H A109032 A. Mihailovs, <a href="http://beta.mapleprimes.com/blog/alec/ponder_this">Ponder This</a>. %H A109032 smit0399, <a href="http://home.kpn.nl/smit0399/3608528850368400786036725.htm">veeldeelbaarheid</a> (in Dutch). %Y A109032 Cf. A109783. %K A109032 nonn,base %O A109032 2,1 %A A109032 _Don Reble_, Aug 17 2005 %E A109032 a(13)-a(32) from _Karl W. Heuer_, Jan 08 2015