id:A147034 - 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 0100-0100-1111-0010 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 5, 25, 85, 499, 2253, 9751, 103141, 1030207, 12930523, 188986765, 3964919203, 79856104275, 2515127447393 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.1.0.0.0.0.1.0` `.0.1.1.1.0.0.1.0` `.1.1.0.0.1.1.1.1` `.0.1.0.0.0.1.0.0` `.0.0.1.0.0.0.1.0` `.1.1.1.1.0.0.1.1` `.0.1.0.0.1.1.1.0` `.0.1.0.0.0.0.1.0`
	CROSSREFS	`Sequence in context: A058919 A018212 A147274 this_sequence A146460 A083090 A147177` `Adjacent sequences: A147031 A147032 A147033 this_sequence A147035 A147036 A147037`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.