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 A010895 #12 Aug 26 2017 05:08:51 %S A010895 2,7,13,22,34,51,70,94,121,153 %N A010895 Minimal scope of a (2,n) difference triangle. %D A010895 CRC Handbook of Combinatorial Designs, 1996, p. 315. %D A010895 CRC Handbook of Combinatorial Designs, Second Edition, 2007, par. 19.37. %H A010895 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/dtsopt.html">Difference Triangle Sets: Known optimal solutions</a>. %H A010895 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/dtslb.html">Difference Triangle Sets: Discoverers</a> %Y A010895 A row or column of array in A234943. %K A010895 nonn,hard %O A010895 1,1 %A A010895 _N. J. A. Sloane_ %E A010895 a(10) from _Andrey Zabolotskiy_, Aug 22 2017