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 A058897 #23 Mar 15 2018 15:29:13 %S A058897 6,39,78,95,82,4 %N A058897 An unknown sequence: several people have asked about this, so it has been added to the database. %C A058897 The question of the next term was proposed Jan 06 2001 on mathforum.org by user "Manikandansk". But no satisfactory solution has so far appeared there. - _M. F. Hasler_, Mar 27 2008 %H A058897 Manikandansk, Richard Askey, Cynthia Lanius, <a href="http://mathforum.org/kb/message.jspa?messageID=2571971">Topic: next number in the series</a> %F A058897 If anyone can explain this, please let me know! - _N. J. A. Sloane_ %Y A058897 For an interpolating polynomial see A058985. %K A058897 nonn,unkn %O A058897 0,1 %A A058897 _N. J. A. Sloane_, Jan 09 2001