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A268008
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Number of nX4 0..4 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
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1
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12, 3183, 1396408, 700411548, 342829793123, 166704329683286, 80006164995290483, 38077402058848620986, 17980419636054322547231, 8437778507562515075641180, 3938617666912898025748700797
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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=2
..0..1..0..0....0..1..2..2....0..1..2..0....0..0..1..2....0..1..0..2
..2..3..3..0....3..0..0..1....0..1..1..3....3..4..3..3....3..0..1..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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