A139684 Number of n X n symmetric binary matrices with no row sum greater than 8.

1, 2, 8, 64, 1024, 32768, 2097152, 268435456, 68719476736, 34575388318705, 32448313431713405, 52469561348291720657, 134755962211702695614887, 514006997326078783646604259, 2768435750908792178769980837441, 20276667790903553518295082198527981

Offset: 0

Author

R. H. Hardin, Jun 13 2008

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 0..25

Crossrefs

Column k=8 of A334548.

Extensions

Terms a(13) and beyond from Andrew Howroyd, May 08 2020