A139679 - OEIS

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A139679

Number of n X n symmetric binary matrices with no row sum greater than 3.

1, 2, 8, 64, 809, 13846, 301262, 8035168, 255780779, 9519891214, 407613033836, 19816627136912, 1082142442901863 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A136282 A092934 A191571 * A005640 A153540 A153568` `Adjacent sequences: A139676 A139677 A139678 * A139680 A139681 A139682`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Jun 13 2008`

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Last modified February 17 06:09 EST 2012. Contains 205987 sequences.