id:A147042 - OEIS Search Results

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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-0100-1111-0100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 3, 13, 39, 151, 607, 2057, 13855, 94157, 812183, 7313331, 95388939, 1173110437 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.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` `.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`
	CROSSREFS	`Sequence in context: A103657 A122504 A103277 this_sequence A018492 A059020 A095109` `Adjacent sequences: A147039 A147040 A147041 this_sequence A147043 A147044 A147045`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.