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A267953
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Number of nX3 0..2 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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4, 96, 1625, 30145, 493087, 8239879, 130870815, 2082478515, 32398824901, 502697528961, 7715771272901, 118070156191861, 1796719487307091, 27277256454891739, 412863240478890453, 6238891286484403929
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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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FORMULA
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Empirical recurrence of order 56 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..1..0....0..1..1....0..0..1....0..0..1....0..1..1....0..1..0....0..1..0
..0..2..2....1..2..2....2..1..2....0..1..0....2..1..0....1..2..0....2..0..1
..1..0..0....2..0..0....0..1..1....1..0..1....0..2..0....2..2..1....0..2..1
..1..0..2....1..2..2....2..2..1....0..2..1....1..0..2....0..1..1....1..2..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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