id:A146175 - 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 110-100-111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 5, 13, 25, 45, 121, 385, 1395, 5901, 28053, 137719, 714777, 4090907, 28017605, 214429525, 1879119265, 18054271787, 200571323617 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.1.0.0` `.0.0.0.1.0.1.0.0` `.0.0.0.1.0.0.1.1` `.1.1.1.0.0.0.0.1` `.1.0.0.0.0.1.1.1` `.1.1.0.0.1.0.0.0` `.0.0.1.0.1.0.0.0` `.0.0.1.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A147031 A147220 A147182 this_sequence A146851 A146260 A147166` `Adjacent sequences: A146172 A146173 A146174 this_sequence A146176 A146177 A146178`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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