id:A147041 - OEIS Search Results

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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0100-0100-1111-0100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 3, 15, 27, 43, 77, 211, 651, 2217, 7655, 29663 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.0.0.0.1.0` `.1.1.1.1.0.0.1.0` `.0.0.1.0.1.1.1.1` `.0.0.1.0.0.0.1.0` `.0.1.0.0.0.1.0.0` `.1.1.1.1.0.1.0.0` `.0.1.0.0.1.1.1.1` `.0.1.0.0.0.1.0.0`
	CROSSREFS	`Sequence in context: A105549 A080065 A017557 this_sequence A002259 A050848 A077785` `Adjacent sequences: A147038 A147039 A147040 this_sequence A147042 A147043 A147044`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified March 20 01:21 EDT 2010. Contains 173643 sequences.