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%I #5 Aug 12 2016 06:54:16
%S 1,15,780,68151,7280046,873319806,113187903900,15506951007015,
%T 2214490608127986,326564039118851370
%N Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north neighbor modulo 6 and the upper left element equal to 0.
%C Row 6 of A267751.
%e Some solutions for n=4
%e ..0..2..3..5....0..2..1..5....0..4..2..0....0..5..2..3....0..2..5..1
%e ..0..2..3..5....1..3..2..5....1..5..2..0....1..0..2..4....0..3..5..2
%e ..0..2..4..0....2..4..3..0....2..5..3..1....2..0..3..4....1..3..5..2
%e ..1..3..4..1....2..4..4..0....3..5..4..1....2..1..4..4....2..4..0..3
%e ..2..4..5..1....3..4..5..1....3..0..4..2....3..1..5..5....3..5..1..4
%e ..3..4..5..1....3..5..0..1....4..1..5..3....3..1..5..0....4..0..1..4
%Y Cf. A267751.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 20 2016
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