id:A146174 - OEIS Search Results

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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-100-111 pattern in any orientation.

+0
1

1, 1, 1, 1, 3, 13, 31, 79, 513, 4397, 30071, 246251, 3267201, 56899771, 1043804543, 23549434373, 739313753641, 29199724578735, 1349766896974211, 78078882718269849, 5907673396173869799 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.1.0.0.0` `.0.0.0.0.1.0.0.0` `.1.0.0.1.1.0.0.0` `.1.0.1.0.0.1.1.1` `.1.1.1.0.0.1.0.1` `.0.0.0.1.1.0.0.1` `.0.0.0.1.0.0.0.0` `.0.0.0.1.1.1.0.0`
	CROSSREFS	`Sequence in context: A007686 A147030 A146259 this_sequence A147134 A146842 A146191` `Adjacent sequences: A146171 A146172 A146173 this_sequence A146175 A146176 A146177`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research