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A278729
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Number of nX3 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
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1
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40, 1947, 58904, 1410818, 28637916, 506031118, 7907770636, 110655824716, 1401584381570, 16222274394016, 173007912264684, 1712497545142699, 15831976807688826, 137451501603516285, 1125976516897709842
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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 polynomial of degree 109 (see link above)
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EXAMPLE
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Some solutions for n=3
..2..2..1. .0..0..0. .1..0..0. .0..3..1. .3..1..1. .3..1..0. .2..0..0
..1..1..3. .1..2..1. .0..3..1. .0..3..1. .3..3..1. .0..0..0. .3..1..1
..2..2..2. .2..2..1. .1..1..3. .1..0..1. .2..0..0. .1..3..2. .1..2..0
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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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