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 A106672 #10 Aug 25 2025 02:11:15 %S A106672 0,2,3,10,16,21,25 %N A106672 Marks on lexicographically fourth 7-mark optimal Golomb ruler. %C A106672 Golomb ruler: Finite set with property that no difference between any two numbers is repeated and largest number is minimized. %H A106672 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/grtab.html">Golomb Ruler Table</a> %H A106672 <a href="http://scholar.google.com/scholar?q=golomb+ruler">Google Scholar</a> %Y A106672 Cf. A079287. %K A106672 nonn,fini,full,changed %O A106672 0,2 %A A106672 Garet Sheppard (gar3ts(AT)gmail.com), May 13 2005 %E A106672 First, 'lexicographically' seems to be the more correct expression. Second, currently there are two entries claiming to be the lexi(co)graphically third 7-mark optimal Golomb ruler - A106673 and this one here of which I think it is the fourth. - _Harald Kucharek_, Apr 21 2013