id:A146605 - 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 1000-1111-0001 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 3, 9, 19, 59, 237, 1193, 6925, 46535, 385115, 3834729, 46129325, 665267927, 11525172145, 240724568637, 6036636466243, 182136263500283, 6609883325424453 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.0.0.0` `.0.0.0.0.1.0.0.0` `.0.0.0.0.1.0.0.0` `.1.0.0.0.1.1.0.0` `.1.1.1.1.0.0.0.0` `.0.0.0.1.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A147455 A146429 A018316 this_sequence A147070 A130586 A147146` `Adjacent sequences: A146602 A146603 A146604 this_sequence A146606 A146607 A146608`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research