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 A095041 #7 Dec 24 2019 08:25:47 %S A095041 1,2,3,4,6,8,12,15,16,17,23,24,27,29,30 %N A095041 One of two (v,k,lambda)=(31,15,7) cyclic difference sets. The other one is A095042. %C A095041 See A095029. %H A095041 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 A095041 Dan Gordon, <a href="https://dmgordon.org/diffset">Difference Sets</a>, searchable database. %Y A095041 Cf. A095025 (number of cyclic difference sets with n elements), A095029-A095047 (more examples of cyclic difference sets with k=5..20). %K A095041 fini,full,nonn %O A095041 1,2 %A A095041 _Hugo Pfoertner_, May 27 2004