id:A147254 - 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 11100-00100-00111 pattern in any orientation.

+0
1

1, 1, 1, 1, 5, 5, 21, 29, 145, 485, 3243, 11105, 102013, 454621, 6519613, 40834561, 722449417 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.1` `.0.0.1.0.0.0.0.1` `.0.0.1.0.0.1.1.1` `.1.1.1.0.0.1.0.0` `.1.0.0.0.0.1.0.0` `.1.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A146043 A116400 A052992 this_sequence A007028 A097336 A014619` `Adjacent sequences: A147251 A147252 A147253 this_sequence A147255 A147256 A147257`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.