id:A068471 - OEIS Search Results

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Number of n X n binary matrices with each 1 having at most 2 adjacent 1's.

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2, 16, 378, 30824, 8402216, 7664347268, 23371379782671, 238225926162821893, 8118262028301675826132, 924887563235974860108746534, 352261845112790535941917078458268 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`No adjacent 1's A006506, one adjacent 1 A067968.` `Sequence in context: A012721 A009341 A015201 this_sequence A140308 A052737 A002474` `Adjacent sequences: A068468 A068469 A068470 this_sequence A068472 A068473 A068474`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Mar 10 2002`

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

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