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%I #5 Aug 12 2016 06:54:16
%S 1,2,5,15,67,761,24745,726627,15303976,251565608,3466082679,
%T 42227611356,474756482065,5136476071361
%N Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north or west neighbors modulo 6 and the upper left element equal to 0.
%C Row 6 of A268115.
%e Some solutions for n=7
%e ..0..0..1..2..3..4..5....0..1..1..2..3..4..4....0..1..2..2..3..4..4
%e ..1..1..1..2..3..4..5....1..2..2..3..4..5..5....1..2..2..3..4..5..5
%e ..2..2..2..3..4..5..0....1..2..2..3..4..5..5....1..2..3..4..5..0..0
%e ..2..2..3..4..5..0..1....1..2..3..4..5..0..0....1..2..3..4..5..0..1
%e ..3..3..4..4..5..0..1....2..3..4..5..0..0..1....2..3..4..5..5..0..1
%e ..3..4..5..5..0..0..1....3..3..4..5..0..0..1....3..3..4..5..0..0..1
%Y Cf. A268115.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 26 2016
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