%I #3 Mar 31 2012 12:35:07
%S 1,4,64,832,43264,1827904,308948224,42427198528,23308417310464,
%T 10404188730539968,18578639958381807616,26955458921407543923136,
%U 156455150623383016555451392
%N 1/5 of the number of 5-colorings of an n X n array symmetric about both diagonal and antidiagonal.
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 05 2008