1,3
See A095029.
Dan Gordon, List of Cyclic Difference Sets
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.
Sequence in context: A116063 A131317 A067087 this_sequence A020151 A071265 A103320
Adjacent sequences: A095041 A095042 A095043 this_sequence A095045 A095046 A095047
fini,full,nonn
Hugo Pfoertner (hugo(AT)pfoertner.org), May 27 2004
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