id:A147403 - 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 1000-1110-0111-0001 pattern in any orientation.

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1

1, 1, 1, 1, 1, 1, 1, 1, 9, 25, 37, 81, 207, 659, 1525, 5011, 16955, 78955, 307577, 1539617, 6559267, 39653567, 197073411, 1351045655 (list; graph; listen)

	OFFSET	`1,9`
	EXAMPLE	`Maximal 9 X 9 example` `.0.0.0.0.1.1.0.0.0` `.0.0.0.1.0.1.1.0.0` `.0.1.1.1.0.1.1.0.0` `.1.1.1.0.0.0.1.1.0` `.1.0.0.0.0.0.0.0.1` `.0.1.1.0.0.0.1.1.1` `.0.0.1.1.0.1.1.1.0` `.0.0.1.1.0.1.0.0.0` `.0.0.0.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A137190 A044070 A147199 this_sequence A044451 A114057 A031036` `Adjacent sequences: A147400 A147401 A147402 this_sequence A147404 A147405 A147406`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research