%I #6 Mar 10 2022 20:41:05
%S 1,0,2,76,33529,22720474,25455579224,44453913778842
%N Number of n X 3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its north, southwest or northwest neighbor modulo n and the upper left element equal to 0.
%C Column 3 of A266878.
%e Some solutions for n=4
%e ..0..2..2....0..1..3....0..2..2....0..1..1....0..1..2....0..3..1....0..3..2
%e ..3..0..1....2..3..3....3..0..1....2..3..0....2..3..0....3..2..3....0..3..1
%e ..2..3..0....0..1..2....1..2..3....1..2..3....0..1..2....2..1..2....3..2..1
%e ..1..1..3....2..0..1....3..0..1....3..0..2....3..3..1....1..0..0....2..1..0
%Y Cf. A266878.
%K nonn
%O 1,3
%A _R. H. Hardin_, Jan 05 2016