The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A006317 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A006317

Maximum number of chess queens of 3 colors on an n X n board such that no queen attacks or protects another queen of its color.
(history; published version)

#23 by Michel Marcus at Sun Mar 30 04:18:01 EDT 2014

STATUS

proposed

approved

#22 by Jon E. Schoenfield at Sun Mar 30 03:44:43 EDT 2014

STATUS

editing

proposed

#21 by Jon E. Schoenfield at Sun Mar 30 03:44:41 EDT 2014

LINKS

B. Recaman, Recamán, <a href="http://dx.doi.org/10.1007/BF03024021">Chess queens, Problem 89-8</a>, Math. Intellig., 12 (No. 3, 1990), 65-68.

STATUS

approved

editing

#20 by Joerg Arndt at Sat Mar 29 02:37:14 EDT 2014

STATUS

proposed

approved

#19 by Michel Marcus at Sat Mar 29 01:35:21 EDT 2014

STATUS

editing

proposed

#18 by Michel Marcus at Sat Mar 29 01:35:08 EDT 2014

REFERENCES

B. Recaman, Chess queens, Problem 89-8, Math. Intellig., 12 (No. 3, 1990), 65-68.

LINKS

B. Recaman, <a href="http://dx.doi.org/10.1007/BF03024021">Chess queens, Problem 89-8</a>, Math. Intellig., 12 (No. 3, 1990), 65-68.

STATUS

proposed

editing

Discussion

Sat Mar 29

01:35

Michel Marcus: moved 1 ref to links

#17 by Jon E. Schoenfield at Sat Mar 29 00:29:21 EDT 2014

STATUS

editing

proposed

#16 by Jon E. Schoenfield at Sat Mar 29 00:29:18 EDT 2014

AUTHOR

N. J. A. Sloane.

EXTENSIONS

a(10) >= 69. - Jud McCranie, Jun 08 2003.

Edited by Jud McCranie, Jun 01, 2003

a(10) and a(11) from Tim Peters (tim.one(AT)comcast.net), Oct 15 2004, using a Python program.

a(15) - Aa(23) from Tim Peters (tim.one(AT)comcast.net), Oct 17 2006

STATUS

approved

editing

#15 by Russ Cox at Fri Mar 30 18:34:51 EDT 2012

EXTENSIONS

a(9) from _Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), _, Jun 01 2003

a(10) >= 69. - _Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), _, Jun 08 2003.

Edited by _Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), _, Jun 01, 2003

Discussion

Fri Mar 30

18:34

OEIS Server: https://oeis.org/edit/global/197

#14 by Russ Cox at Fri Mar 30 16:44:57 EDT 2012

AUTHOR

_N. J. A. Sloane (njas(AT)research.att.com)_.

Discussion

Fri Mar 30

16:44

OEIS Server: https://oeis.org/edit/global/110