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A139674 Number of n X n symmetric binary matrices with all row sums 7. +0
1
1, 764, 708256, 805036704, 1127512146540, 1966499966796816 (list; graph; listen)
OFFSET

7,2
CROSSREFS

Sequence in context: A049534 A054468 A156395 this_sequence A124412 A158126 A124413

Adjacent sequences: A139671 A139672 A139673 this_sequence A139675 A139676 A139677

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Jun 12 2008

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

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