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A267949
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Number of nX4 0..2 arrays with every repeated value in every row and column one larger mod 3 than the previous repeated value, and upper left element zero.
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1
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21, 1323, 52542, 1965330, 63015581, 1919539785, 54600088140, 1497422284157, 39564274878078, 1019357844042958, 25666134197134128, 635034954062340420, 15473668537066693635, 372414770834024213537, 8868326255432266486264
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..0..0..2..1....0..2..0..0....0..2..0..0....0..1..2..2....0..0..2..1
..2..2..0..2....2..2..1..2....0..2..1..0....2..1..1..2....1..0..1..0
..2..0..0..1....2..0..1..2....1..0..2..2....1..0..2..1....1..2..0..2
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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