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 A095040 #11 Aug 18 2021 21:45:36 %S A095040 1,13,20,21,23,44,61,72,77,86,90,116,122,169 %N A095040 An example of a (v,k,lambda)=(183,14,1) cyclic difference set. %C A095040 See A095029. %H A095040 Dan Gordon, <a href="http://web.archive.org/web/20101226230341/http://www.ccrwest.org/diffsets/ds_list.pdf">List of Cyclic Difference Sets</a>, (2003). %H A095040 Dan Gordon, <a href="https://dmgordon.org/diffset">Difference Sets</a>, searchable database. %Y A095040 Cf. A095025 (number of cyclic difference sets with n elements), A095029-A095047 (more examples of cyclic difference sets with k=5..20), A000961 (prime powers). %K A095040 fini,full,nonn %O A095040 1,2 %A A095040 _Hugo Pfoertner_, May 27 2004