id:A146787 - 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 0100-1100-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 3, 5, 11, 21, 39, 105, 351, 1205, 4629, 16631, 70563, 335933, 1961161, 12194507, 84627809, 599408761 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.1.1.0` `.0.0.0.1.1.0.0.1` `.0.0.0.0.1.0.0.1` `.1.1.0.0.0.1.1.1` `.1.1.1.0.0.0.1.1` `.1.0.0.1.0.0.0.0` `.1.0.0.1.1.0.0.0` `.0.1.1.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A057460 A093328 A045515 this_sequence A147243 A122997 A146042` `Adjacent sequences: A146784 A146785 A146786 this_sequence A146788 A146789 A146790`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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