%I #5 Dec 18 2015 18:17:22
%S 4,34,784,55759,12899284,10000841284,26576772382759,
%T 246536065153505959,8102697426477665232634,
%U 955064733192276340384536034,407800526115803629512654763147159
%N Number of n X n symmetric 0..3 arrays with rows, considered as 4-ary numbers, in nondecreasing order
%H R. H. Hardin, <a href="/A162079/b162079.txt">Table of n, a(n) for n=1..13</a>
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009