A139683 Number of n X n symmetric binary matrices with no row sum greater than 7.

1, 2, 8, 64, 1024, 32768, 2097152, 268435456, 66628946641, 29707592691510, 21634670753754060, 23709506474859569328, 36821021837919664452090, 77635187673471762914463552, 215313862348697780762374273824, 766493362781127793638943080523776

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=7 of A334548.

Extensions

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