A139674 - OEIS

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A139674

Number of n X n symmetric binary matrices with all row sums 7.

1, 764, 708256, 805036704, 1127512146540, 1966499966796816 (list; graph; refs; listen; history; internal format)

	OFFSET	`7,2`
	CROSSREFS	`Sequence in context: A054468 A156395 A188402 * A124412 A158126 A124413` `Adjacent sequences: A139671 A139672 A139673 * A139675 A139676 A139677`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Jun 12 2008`

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Last modified February 14 18:47 EST 2012. Contains 205663 sequences.