id:A146242 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 110-111-010 pattern in any orientation.

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1

1, 1, 1, 1, 1, 1, 5, 5, 17, 17, 55, 55, 445, 445, 7601, 7601, 166611, 166611, 5058693, 5058693, 255201297, 255201297, 21434365863, 21434365863, 2739845770351, 2739845770351, 552080325938657, 552080325938657, 172381380433171337 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.1.0.0.0.0.1.0` `.1.1.1.0.0.1.1.1` `.0.1.1.0.0.1.1.0` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.1.1.0.0.1.1.0` `.1.1.1.0.0.1.1.1` `.0.1.0.0.0.0.1.0`
	CROSSREFS	`Sequence in context: A147195 A147045 A146065 this_sequence A146132 A095342 A100745` `Adjacent sequences: A146239 A146240 A146241 this_sequence A146243 A146244 A146245`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.

AT&T Labs Research