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A201830
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Number of nX2 0..3 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally
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1
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10, 50, 212, 823, 3030, 10777, 37530, 128742, 437110, 1472736, 4933374, 16449879, 54649472, 181008926, 598052300, 1971884632, 6490418396, 21331768570, 70022479666, 229604183052, 752170525867, 2462061236121, 8053252606139
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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=7
..0..1....0..1....0..1....0..0....0..0....0..0....0..0....1..1....0..0....0..0
..1..1....1..2....0..1....0..1....1..1....1..1....0..0....1..2....1..1....1..2
..2..2....1..2....1..3....2..3....1..1....1..3....2..2....1..3....1..1....1..1
..1..3....1..2....1..3....1..3....1..2....1..3....2..2....1..2....1..2....1..1
..2..2....2..3....1..2....2..2....1..2....3..3....1..3....2..2....1..1....1..1
..2..3....3..3....2..3....1..2....1..2....3..3....1..3....2..2....1..1....1..1
..3..3....3..3....2..3....1..2....1..2....2..3....1..3....2..3....1..1....3..3
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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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