A139675 - OEIS

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A139675

Number of n X n symmetric binary matrices with all row sums 8.

1, 2620, 8372754, 30649435140, 133475706272700 (list; graph; refs; listen; history; internal format)

	OFFSET	`8,2`
	CROSSREFS	`Sequence in context: A180650 A180330 A156398 * A190936 A020439 A157609` `Adjacent sequences: A139672 A139673 A139674 * A139676 A139677 A139678`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Jun 12 2008`

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Last modified February 16 11:25 EST 2012. Contains 205907 sequences.