id:A147451 - 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 11000-01100-00110-00011 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 5, 13, 25, 101, 375, 1753, 9905, 61267, 438109, 3882461, 41001981, 504280659 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.1.0.0.0.0.0.0.0` `.1.1.0.0.1.0.0.0` `.0.1.1.0.1.1.0.0` `.0.0.1.1.0.1.1.0` `.0.0.0.1.0.0.1.1` `.0.0.0.0.0.0.0.1` `.0.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A107466 A098480 A018394 this_sequence A139595 A008778 A014813` `Adjacent sequences: A147448 A147449 A147450 this_sequence A147452 A147453 A147454`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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

AT&T Labs Research