%I #7 May 08 2020 22:13:19
%S 1,2,8,64,1024,32768,2097152,268435456,68719476736,34575388318705,
%T 32448313431713405,52469561348291720657,134755962211702695614887,
%U 514006997326078783646604259,2768435750908792178769980837441,20276667790903553518295082198527981
%N Number of n X n symmetric binary matrices with no row sum greater than 8.
%H Andrew Howroyd, <a href="/A139684/b139684.txt">Table of n, a(n) for n = 0..25</a>
%Y Column k=8 of A334548.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jun 13 2008
%E Terms a(13) and beyond from _Andrew Howroyd_, May 08 2020