id:A147055 - OEIS Search Results

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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0100-1101-0111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 3, 9, 19, 33, 55, 157, 613, 2645, 10617, 38367, 155201, 818161, 5194409, 36087637, 257389985 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.1.0.0` `.0.0.1.1.0.1.0.0` `.0.1.0.1.0.0.1.1` `.1.1.1.0.0.0.0.1` `.1.0.0.0.0.1.1.1` `.1.1.0.0.1.0.1.0` `.0.0.1.0.1.1.0.0` `.0.0.1.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A066506 A058331 A049749 this_sequence A146638 A147135 A146843` `Adjacent sequences: A147052 A147053 A147054 this_sequence A147056 A147057 A147058`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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