id:A146473 - 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 1110-0111 pattern in any orientation.

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1

1, 1, 1, 1, 1, 1, 3, 5, 11, 17, 47, 105, 423, 1139, 5013, 16157, 89505, 364489, 2547425, 12720065, 106893393, 655837481, 6848268559, 52044360871, 671335193705, 6279476454279, 99399530079385, 1146233917953945, 22401744159971375 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.1.1.0` `.0.0.0.1.1.1.0.1` `.0.0.0.0.0.0.1.1` `.0.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.0` `.1.1.0.0.0.0.0.0` `.1.0.1.1.1.0.0.0` `.0.1.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A019386 A154622 A147251 this_sequence A165446 A167466 A101781` `Adjacent sequences: A146470 A146471 A146472 this_sequence A146474 A146475 A146476`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

AT&T Labs Research