%I
%S 1,0,6,1129,437427,310439601,368078731163,672850064250832,
%T 1794103196444632314
%N Number of nX3 arrays containing 3 copies of 0..n1 with no element 1 greater than its west or southwest neighbor modulo n and the upper left element equal to 0.
%C Column 3 of A267072.
%e Some solutions for n=4
%e ..0..0..2....0..2..2....0..2..0....0..2..1....0..0..3....0..3..3....0..0..2
%e ..0..3..1....2..0..3....3..2..2....2..2..1....2..0..2....1..1..3....1..3..1
%e ..3..1..1....0..3..1....0..3..1....0..3..3....1..3..2....2..0..2....3..2..1
%e ..3..2..2....1..1..3....1..1..3....1..0..3....1..3..1....1..0..2....3..2..0
%Y Cf. A267072.
%K nonn
%O 1,3
%A _R. H. Hardin_, Jan 10 2016
