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A201151
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Number of nX4 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally
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1
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19, 140, 860, 4572, 22183, 100362, 432048, 1791740, 7225068, 28510387, 110629661, 423640742, 1605361751, 6032626211, 22517083366, 83589139136, 308933515758, 1137661210293, 4177146453272, 15300167480847, 55930646132694
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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=5
..0..0..0..1....0..0..0..1....0..0..0..1....0..0..0..0....0..0..0..1
..0..1..1..1....0..1..1..1....0..0..1..2....0..0..0..0....0..0..1..2
..0..1..2..1....0..1..2..1....0..1..1..2....0..0..0..1....0..0..2..2
..0..1..1..1....1..1..2..2....0..2..1..2....0..2..1..2....0..1..2..2
..0..2..2..2....2..2..2..2....0..2..1..2....1..1..2..2....0..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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