login
Number of n X n symmetric binary matrices with no row sum greater than 7.
2

%I #8 May 08 2020 18:24:58

%S 1,2,8,64,1024,32768,2097152,268435456,66628946641,29707592691510,

%T 21634670753754060,23709506474859569328,36821021837919664452090,

%U 77635187673471762914463552,215313862348697780762374273824,766493362781127793638943080523776

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

%H Andrew Howroyd, <a href="/A139683/b139683.txt">Table of n, a(n) for n = 0..25</a>

%Y Column k=7 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