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A201499
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Number of n X n 0..1 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other
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1
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2, 2, 6, 8, 40, 58, 338, 526, 3334, 5448, 36168, 61108, 417920, 723354, 5054148, 8908546, 63260780, 113093022, 813360930, 1470597342, 10685501398, 19499227828, 142885700222, 262754984020, 1939096937920, 3589093760726, 26647143177214
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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=4
..0..0..0..1....0..0..0..0....0..0..0..1....0..0..0..1....0..0..0..0
..0..0..0..1....0..0..1..1....0..0..1..1....0..0..0..1....0..0..0..1
..0..1..1..1....0..1..1..1....0..0..1..1....0..0..1..1....0..1..1..1
..0..1..1..1....0..1..1..1....0..1..1..1....1..1..1..1....1..1..1..1
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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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