id:A146623 - OEIS Search Results

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Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1001-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 3, 1, 5, 1, 7, 5, 21, 13, 69, 33, 309, 131, 1529, 465, 8153, 2505, 52849, 18109, 418127, 137539, 4312045, 1253575, 52848473 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.0.0.1.0.0` `.0.0.1.1.1.1.0.0` `.1.1.0.0.0.0.1.1` `.0.1.0.0.0.0.1.0` `.0.1.0.0.0.0.1.0` `.1.1.0.0.0.0.1.1` `.0.0.1.1.1.1.0.0` `.0.0.1.0.0.1.0.0`
	CROSSREFS	`Sequence in context: A160596 A092319 A147410 this_sequence A029669 A050329 A147005` `Adjacent sequences: A146620 A146621 A146622 this_sequence A146624 A146625 A146626`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research