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A139676 Number of n X n symmetric binary matrices with all row sums 9. 0
1, 9496, 108306280, 1322299270600 (list; graph; refs; listen; history; text; internal format)
OFFSET
9,2
LINKS
CROSSREFS
Sequence in context: A204961 A237104 A156402 * A291209 A235424 A235420
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 12 2008
STATUS
approved

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Last modified May 28 15:56 EDT 2024. Contains 372916 sequences. (Running on oeis4.)