id:A146191 - 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 101-111-100 pattern in any orientation.

+0
1

1, 1, 1, 1, 3, 13, 31, 85, 561, 4911, 35269, 314409, 4382215, 80159625, 1612619787, 40395227173, 1368159254461, 58890622637327, 3064461664498081, 200721016168368683, 16988612946006051893, 1814141923819418631539 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.0.1.0.0.0` `.0.0.1.1.1.0.0.0` `.1.1.0.0.1.0.0.0` `.0.1.0.0.0.1.0.1` `.1.1.1.0.0.1.1.1` `.0.0.0.1.1.0.0.1` `.0.0.0.0.1.0.0.0` `.0.0.0.1.1.1.0.0`
	CROSSREFS	`Sequence in context: A146174 A147134 A146842 this_sequence A058264 A034050 A107689` `Adjacent sequences: A146188 A146189 A146190 this_sequence A146192 A146193 A146194`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research