id:A147143 - 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 1000-1100-0110-0011 pattern in any orientation.

+0
1

1, 1, 1, 1, 3, 5, 7, 11, 39, 91, 199, 489, 1779, 6121, 21635, 87281, 429831 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.1.0.0` `.0.0.0.1.0.1.1.0` `.0.0.0.1.1.0.1.1` `.0.1.1.0.1.1.0.1` `.1.0.1.1.0.1.1.0` `.1.1.0.1.1.0.0.0` `.0.1.1.0.1.0.0.0` `.0.0.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A060771 A061245 A137355 this_sequence A006034 A083840 A088051` `Adjacent sequences: A147140 A147141 A147142 this_sequence A147144 A147145 A147146`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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