id:A147213 - OEIS Search Results

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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1100-0111-0011 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 3, 9, 19, 39, 117, 361, 955, 3303, 16663, 85069, 434621, 2513479, 17082851, 120871405, 925679621 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.1.1.0` `.0.0.0.1.1.1.0.1` `.0.0.0.1.1.0.1.1` `.0.1.1.0.0.1.1.0` `.0.1.1.0.0.1.1.0` `.1.1.0.1.1.0.0.0` `.1.0.1.1.1.0.0.0` `.0.1.1.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A135117 A038163 A146819 this_sequence A146441 A147341 A160704` `Adjacent sequences: A147210 A147211 A147212 this_sequence A147214 A147215 A147216`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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