id:A147121 - 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 1000-1000-1111-0100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 7, 23, 49, 87, 207, 721, 2133, 8229, 34269, 162105, 830967, 4627991, 26390809, 175258607 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.1.0.0.0.0.1.1.1` `.1.0.0.0.1.1.0.0` `.1.1.1.1.0.1.0.0` `.0.1.0.0.0.1.0.0` `.0.0.1.0.0.0.1.0` `.0.0.1.0.1.1.1.1` `.0.0.1.1.0.0.0.1` `.1.1.1.0.0.0.0.1`
	CROSSREFS	`Sequence in context: A101789 A162290 A062725 this_sequence A098334 A038796 A004068` `Adjacent sequences: A147118 A147119 A147120 this_sequence A147122 A147123 A147124`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 27 14:17 EST 2009. Contains 167569 sequences.