id:A147474 - 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 1100-1111-0100-0100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 3, 11, 35, 119, 483, 1553, 7807, 47813, 363745, 2696139 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.0.0.0.1.1` `.0.0.1.0.1.1.1.1` `.1.1.1.1.0.0.1.0` `.0.0.1.1.0.0.1.0` `.0.1.0.0.1.1.0.0` `.0.1.0.0.1.1.1.1` `.1.1.1.1.0.1.0.0` `.1.1.0.0.0.1.0.0`
	CROSSREFS	`Sequence in context: A125672 A107683 A014335 this_sequence A119143 A119092 A119177` `Adjacent sequences: A147471 A147472 A147473 this_sequence A147475 A147476 A147477`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.