id:A146464 - 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 1100-0111-0100 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 7, 21, 55, 263, 1645, 13423, 126629, 1447199, 21743065, 415978809, 9965909653, 303132585251, 11591760284391, 555704916934105, 33613901189599473, 2574475177790739409 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.1.0.0` `.0.0.1.1.1.0.0.0` `.0.1.0.0.1.0.0.1` `.0.1.0.0.0.1.1.1` `.1.1.1.0.0.0.1.0` `.1.0.0.1.0.0.1.0` `.0.0.0.1.1.1.0.0` `.0.0.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A146400 A146408 A050894 this_sequence A001354 A088656 A146139` `Adjacent sequences: A146461 A146462 A146463 this_sequence A146465 A146466 A146467`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

AT&T Labs Research