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An example of a (v,k,lambda)=(107,53,26) cyclic difference set.
20

%I #10 Aug 18 2021 21:46:04

%S 1,3,4,9,10,11,12,13,14,16,19,23,25,27,29,30,33,34,35,36,37,39,40,41,

%T 42,44,47,48,49,52,53,56,57,61,62,64,69,75,76,79,81,83,85,86,87,89,90,

%U 92,99,100,101,102,105

%N An example of a (v,k,lambda)=(107,53,26) cyclic difference set.

%C See A095029. This is an example of a difference set that produces a large number of different representations.

%H 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 Dan Gordon, <a href="https://dmgordon.org/diffset">Difference Sets</a>, searchable database.

%Y Cf. A095025 (number of cyclic difference sets with n elements), A095029-A095046 (more examples of cyclic difference sets with k=5..20).

%K fini,full,nonn

%O 1,2

%A _Hugo Pfoertner_, May 27 2004