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A139684 Number of n X n symmetric binary matrices with no row sum greater than 8. 2
1, 2, 8, 64, 1024, 32768, 2097152, 268435456, 68719476736, 34575388318705, 32448313431713405, 52469561348291720657, 134755962211702695614887, 514006997326078783646604259, 2768435750908792178769980837441, 20276667790903553518295082198527981 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Column k=8 of A334548.
Sequence in context: A084282 A139682 A139683 * A139685 A006125 A193753
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 13 2008
EXTENSIONS
Terms a(13) and beyond from Andrew Howroyd, May 08 2020
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)