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 A106681 #1 Jul 19 2005 03:00:00 %S A106681 0,4,13,15,42,56,59,77,93,116,126,138,146,174,214,221,240,245,246 %N A106681 Marks on 19-mark optimal Golomb ruler. %C A106681 Golomb ruler: Finite set with property that no difference between any two numbers is repeated and largest number is minimized. %H A106681 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/gropt.html">Golomb Ruler Table</a> %H A106681 <a href="http://scholar.google.com/scholar?q=golomb+ruler">Google Scholar</a> %Y A106681 Cf. A079605 + 1. %K A106681 nonn,fini,full %O A106681 0,2 %A A106681 Garet Sheppard (gar3ts(AT)gmail.com), May 13 2005