id:A146416 - 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 1000-1111-1000 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 3, 9, 21, 62, 243, 1174, 7129, 48787, 396149, 3872121, 46149825, 666105009, 11588188375, 240646188473, 5995766803300, 179504408659371, 6478981553440867, 281573700280824120, 14724253264482951366 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.1.0.0` `.0.0.0.0.1.0.1.0` `.0.0.0.0.1.0.1.0` `.1.0.0.0.1.0.1.0` `.1.1.1.1.0.1.1.1` `.1.0.0.0.1.0.0.0` `.0.1.1.1.1.0.0.0` `.0.0.0.0.1.0.0.0`
	CROSSREFS	`Sequence in context: A026551 A060578 A147078 this_sequence A004667 A073947 A062811` `Adjacent sequences: A146413 A146414 A146415 this_sequence A146417 A146418 A146419`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

AT&T Labs Research