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 A013575 #8 Jul 08 2025 02:47:52 %S A013575 6,13,19,24,30,36,42,48,54,60,66,72,78,84,90 %N A013575 Minimal scope of an (n,3) difference triangle. %D A013575 CRC Handbook of Combinatorial Designs, 1996, p. 315. %H A013575 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/dtsopt.html">Difference Triangle Sets: Known optimal solutions</a>. %H A013575 J. B. Shearer, <a href="http://www.research.ibm.com/people/s/shearer/dtslb.html">Difference Triangle Sets: Discoverers</a> %Y A013575 A row or column of array in A234943. %K A013575 nonn,more %O A013575 1,1 %A A013575 _N. J. A. Sloane_