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Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north, southwest or northwest neighbors modulo 6 and the upper left element equal to 0.
0

%I #5 Aug 12 2016 06:54:00

%S 1,0,0,0,0,1,7,92,1152,9087,44525,149501,382787,893920,2164458,

%T 6927881,49712828,546657345,5768069656,51400505702

%N Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north, southwest or northwest neighbors modulo 6 and the upper left element equal to 0.

%C Row 6 of A267197.

%e Some solutions for n=10

%e ..0..0..1..1..2..3..3..4..4..5....0..1..2..2..3..3..4..5..0..0

%e ..0..0..1..1..2..3..4..4..5..5....1..1..2..3..3..4..4..5..0..1

%e ..0..1..1..2..2..3..4..4..5..5....1..2..2..3..4..4..5..5..0..1

%e ..0..1..2..2..2..3..4..4..5..0....2..2..3..3..4..5..5..5..0..1

%e ..0..1..2..2..3..3..4..5..5..0....2..2..3..4..4..5..5..0..0..1

%e ..1..1..2..3..3..3..4..5..5..0....2..3..3..4..4..5..0..0..1..1

%Y Cf. A267197.

%K nonn

%O 1,7

%A _R. H. Hardin_, Jan 11 2016