%I #5 Dec 18 2015 18:17:40
%S 0,0,0,0,0,145,6944,635377,69009813,12541320254,3495358855982,
%T 1626847265319815,1240274531663638765
%N Number of n X n symmetric 0..3 arrays with each element equal to at least two horizontal or vertical neighbors, containing at least one 3 and with new values 0..3 introduced in lower triangular row major order
%e Some solutions for 6X6
%e ..0..0..0..0..0..0....0..0..1..1..3..3....0..0..1..1..2..2....0..0..0..0..2..2
%e ..0..0..1..1..0..0....0..0..1..1..3..3....0..0..1..1..2..2....0..0..0..0..2..2
%e ..0..1..1..1..2..2....1..1..2..2..3..3....1..1..1..1..1..1....0..0..0..1..1..1
%e ..0..1..1..2..2..2....1..1..2..2..3..3....1..1..1..1..1..1....0..0..1..1..1..1
%e ..0..0..2..2..3..3....3..3..3..3..3..3....2..2..1..1..3..3....2..2..1..1..3..3
%e ..0..0..2..2..3..3....3..3..3..3..3..3....2..2..1..1..3..3....2..2..1..1..3..3
%K nonn
%O 1,6
%A _R. H. Hardin_ Jul 11 2011
