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%I #5 Aug 12 2016 06:54:00
%S 720,19,147,1015,15171,255437,4893787,100710495,2166450939
%N Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any northeast or northwest neighbors modulo 7 and the upper left element equal to 0.
%C Row 7 of A267019.
%e Some solutions for n=4
%e ..0..4..0..3....0..3..0..4....0..3..0..4....0..3..6..3....0..0..0..0
%e ..4..1..4..1....4..1..4..0....4..1..4..1....4..0..3..6....1..1..1..1
%e ..1..5..1..5....1..4..1..5....2..5..1..5....0..4..0..3....2..2..2..2
%e ..5..2..5..2....5..2..5..1....6..2..5..1....4..1..4..1....3..3..3..3
%e ..2..6..2..6....2..5..2..6....3..6..2..5....1..5..1..5....4..4..4..4
%e ..6..3..6..3....6..2..6..3....0..3..6..2....6..2..5..2....5..5..5..5
%e ..3..0..4..0....3..0..3..6....4..0..3..6....2..6..2..5....6..6..6..6
%Y Cf. A267019.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 09 2016
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