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 A001049 #12 Aug 22 2015 10:09:48 %S A001049 8,14,23,28,33,42,51,59,68,77,86,96,103,110,116,125 %N A001049 Numbered stops in Manhattan on the Lexington Avenue subway. %C A001049 These are the numbered stops for the #6 train. %D A001049 An Adventurer's Guide to Number Theory by R. Friedberg, 1968, McGraw-Hill, p. 30 (corrected). %D A001049 NYC Transit, NYC Subway Map, 2005. %H A001049 R. K. Guy, <a href="/A002186/a002186.pdf">Letters to N. J. A. Sloane, June-August 1968</a> %H A001049 <a href="http://www.mta.nyc.ny.us/nyct/service/fourline.htm">Map, schedule, etc.</a> %H A001049 <a href="http://www.mta.info">NYC Transit</a> %Y A001049 Cf. A000053 A000054 A007826. %K A001049 nonn,fini,full %O A001049 1,1 %A A001049 _Howard Givner_ %E A001049 Additional comments from Nyck Byrd (nyc10024(AT)lycos.com), Dec 25 2005