The On-Line Encyclopedia of Integer Sequences® (OEIS®)

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The On-Line Encyclopedia of Integer Sequences® (OEIS®)

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Revision History for A147339

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A147339

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation.
(history; published version)

#4 by Russ Cox at Sat Mar 31 12:35:16 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net)_

Discussion
Sat Mar 31	12:35	OEIS Server: https://oeis.org/edit/global/875

#3 by N. J. A. Sloane at Sat Oct 02 03:00:00 EDT 2010

KEYWORD

nonn,new

nonn

AUTHOR

Ron R. H. Hardin (rhhardin(AT)att.net)

#2 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010

NAME

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orentationorientation.

KEYWORD

nonn,new

nonn

#1 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

	NAME	`Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orentation.`
	DATA	`1, 1, 1, 1, 1, 1, 1, 1, 11, 15, 183, 305, 1851, 3761, 35145, 75363, 1670651, 4265463, 180681913, 541465905, 30900571055, 107421245147, 8457236647761, 34044967457309, 4310491231691799`
	OFFSET	`1,9`
	EXAMPLE	`Maximal 9 X 9 example` `.0.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0.0` `.0.0.1.0.0.0.1.0.0` `.0.0.1.0.0.0.1.0.0` `.1.1.1.1.0.1.1.1.1` `.0.1.0.0.0.0.0.1.0` `.0.1.0.0.0.0.0.1.0`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`
	STATUS	`approved`

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Last modified August 26 22:10 EDT 2024. Contains 375462 sequences. (Running on oeis4.)