%I #5 Aug 12 2016 06:54:00
%S 1,1,2,2,4,135,2192,18140,96291,401459,1594603,7089502,45031108,
%T 518872408,7088206956,81255284697,741934496544
%N Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north, west or southwest neighbors modulo 6 and the upper left element equal to 0.
%C Row 6 of A267338.
%e Some solutions for n=6
%e ..0..1..2..3..4..5....0..1..2..3..3..4....0..1..1..2..3..4....0..0..1..2..3..4
%e ..1..2..3..4..5..0....1..2..2..3..4..5....0..1..1..2..3..4....0..1..2..3..4..5
%e ..1..2..3..4..5..0....1..2..3..4..5..0....0..1..2..3..4..5....1..2..3..4..5..5
%e ..1..2..3..4..5..0....2..3..4..5..0..1....1..2..3..4..5..0....1..2..3..4..5..0
%e ..2..3..4..5..0..1....3..4..5..0..0..1....2..3..4..5..5..0....1..2..3..4..5..0
%e ..3..4..5..0..1..2....4..5..5..0..1..2....2..3..4..5..5..0....2..3..4..5..0..1
%Y Cf. A267338.
%K nonn
%O 1,3
%A _R. H. Hardin_, Jan 13 2016