id:A147264 - OEIS Search Results

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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1100-0111-0001 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 5, 15, 33, 77, 553, 3895, 24243, 170053, 2059185, 30409467, 474043707, 8705603341, 222308455647, 7060172178631, 259928502701315 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.1.1` `.0.0.0.0.0.0.1.0` `.0.0.0.0.1.1.1.0` `.0.0.0.1.0.1.0.0` `.0.0.0.1.1.0.0.0` `.0.1.1.1.0.0.0.0` `.0.1.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A155013 A134887 A055004 this_sequence A147150 A006003 A111385` `Adjacent sequences: A147261 A147262 A147263 this_sequence A147265 A147266 A147267`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research