id:A147477 - 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 1100-1111-1100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 3, 9, 19, 52, 181, 742, 4149, 26078, 174469, 1396213, 13529455 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.1.1` `.0.0.0.0.1.1.1.1` `.0.0.0.1.0.0.1.1` `.0.0.0.1.0.0.0.0` `.0.0.1.1.1.0.0.0` `.0.0.1.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A091411 A102001 A146901 this_sequence A146677 A077442 A147455` `Adjacent sequences: A147474 A147475 A147476 this_sequence A147478 A147479 A147480`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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