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A139671 Number of n X n symmetric binary matrices with all row sums 5. +0
1
1, 76, 6912, 848932, 133948836, 26615510712, 6549149852112, 1966499966796816 (list; graph; listen)
OFFSET

5,2
CROSSREFS

Sequence in context: A116264 A004299 A049669 this_sequence A098606 A093276 A093238

Adjacent sequences: A139668 A139669 A139670 this_sequence A139672 A139673 A139674

KEYWORD

nonn

AUTHOR

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

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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