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 A064265 #6 Jul 14 2012 10:56:14 %S A064265 5,1,6,2,5,3,6,4,0,3,1,4,0,5,1,4,2,5,3 %N A064265 Paschal regular in Julian calendar for a year with Golden Number n. %D A064265 B. Blackburn and L. Hollford-Stevens, The Oxford Companion to the Year, Oxford, 1999; see p. 821. %H A064265 Eric Weisstein's World of Astronomy, <a href="http://scienceworld.wolfram.com/astronomy/GoldenNumber.html">Golden Number</a> %H A064265 <a href="/index/Ca#calendar">Index entries for sequences related to calendars</a> %K A064265 nonn,fini,full %O A064265 1,1 %A A064265 _N. J. A. Sloane_, Sep 24 2001