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 A234945 #6 Jan 08 2014 23:18:18 %S A234945 1,2,9,12,174,3132,71930 %N A234945 Number of different optimal triangle difference sets M(n,3). %H A234945 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/dtsopt.html">Difference Triangle Sets: Known optimal solutions</a>. %H A234945 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/dtslb.html">Difference Triangle Sets: Discoverers</a> %Y A234945 A row of array in A234944. Cf. A234943. %K A234945 nonn %O A234945 1,2 %A A234945 _N. J. A. Sloane_, Jan 08 2014