The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A184269 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A184269

Number of distinct n X 7 toroidal binary arrays.
(history; published version)

#20 by R. J. Mathar at Sat Jan 20 16:14:49 EST 2018

STATUS

editing

approved

#19 by R. J. Mathar at Sat Jan 20 16:14:46 EST 2018

LINKS

S. N. Ethier, <a href="http://arxiv.org/abs/1301.2352">Counting toroidal binary arrays</a>, arXiv preprint arXiv:1301.2352, 2013 and <a href="https://cs.uwaterloo.ca/journals/JIS/VOL16/Ethier/ethier2.html">J. Int. Seq. 16 (2013) #13.4.7</a>.

STATUS

approved

editing

#18 by Bruno Berselli at Wed Dec 17 06:31:13 EST 2014

STATUS

proposed

approved

#17 by Jon E. Schoenfield at Tue Dec 16 23:04:41 EST 2014

STATUS

editing

proposed

#16 by Jon E. Schoenfield at Tue Dec 16 23:04:39 EST 2014

NAME

Number of unique distinct n X 7 toroidal binary arrays.

AUTHOR

R. H. Hardin , Jan 10 2011

STATUS

approved

editing

#15 by Vaclav Kotesovec at Thu Sep 04 09:20:46 EDT 2014

STATUS

editing

approved

#14 by Vaclav Kotesovec at Thu Sep 04 09:20:38 EDT 2014

FORMULA

a(n) ~ 128^n / (7*n). - Vaclav Kotesovec, Sep 04 2014

#13 by Vaclav Kotesovec at Thu Sep 04 09:09:16 EDT 2014

LINKS

Vaclav Kotesovec, <a href="/A184269/b184269.txt">Table of n, a(n) for n = 1..470</a>

MAPLE

seq (a(n), n=1..20); # Alois P. Heinz, Aug 25 2012

STATUS

approved

editing

#12 by T. D. Noe at Wed Apr 10 14:05:57 EDT 2013

STATUS

editing

approved

#11 by T. D. Noe at Wed Apr 10 14:05:54 EDT 2013

REFERENCES

S. N. Ethier, Counting toroidal binary arrays, arXiv preprint arXiv:1301.2352, 2013. - From N. J. A. Sloane, Feb 11 2013

LINKS

S. N. Ethier, <a href="http://arxiv.org/abs/1301.2352">Counting toroidal binary arrays</a>, arXiv preprint arXiv:1301.2352, 2013.

STATUS

approved

editing