The On-Line Encyclopedia of Integer Sequences (OEIS)

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A095046

An example of a (v,k,lambda)=(381,20,1) cyclic difference set.
(history; published version)

#10 by Susanna Cuyler at Wed Aug 18 21:45:59 EDT 2021

STATUS

reviewed

approved

#9 by Michel Marcus at Wed Aug 18 11:56:27 EDT 2021

STATUS

proposed

reviewed

#8 by Hugo Pfoertner at Wed Aug 18 11:51:07 EDT 2021

STATUS

editing

proposed

#7 by Hugo Pfoertner at Wed Aug 18 11:51:00 EDT 2021

NAME

The An example of a (v,k,lambda)=(381,20,1) cyclic difference set.

STATUS

approved

editing

#6 by Susanna Cuyler at Tue Dec 24 08:26:12 EST 2019

STATUS

reviewed

approved

#5 by Michel Marcus at Tue Dec 24 05:53:10 EST 2019

STATUS

proposed

reviewed

#4 by Hugo Pfoertner at Tue Dec 24 04:04:27 EST 2019

STATUS

editing

proposed

#3 by Hugo Pfoertner at Tue Dec 24 03:50:30 EST 2019

LINKS

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).

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

CROSSREFS

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).

STATUS

approved

editing

#2 by Russ Cox at Sat Mar 31 10:29:04 EDT 2012

AUTHOR

_Hugo Pfoertner (hugo(AT)pfoertner.org), _, May 27 2004

Discussion

Sat Mar 31

10:29

OEIS Server: https://oeis.org/edit/global/581

#1 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004

NAME

The (v,k,lambda)=(381,20,1) cyclic difference set.

DATA

0, 1, 19, 28, 96, 118, 151, 153, 176, 202, 240, 254, 290, 296, 300, 307, 337, 361, 366, 369

OFFSET

1,3

COMMENTS

See A095029.

LINKS

Dan Gordon, <a href="http://www.ccrwest.org/diffsets/ds_list.pdf">List of Cyclic Difference Sets</a>

CROSSREFS

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.

KEYWORD

fini,full,nonn

AUTHOR

Hugo Pfoertner (hugo(AT)pfoertner.org), May 27 2004

STATUS

approved