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A251476
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Number of (n+1)X(2+1) 0..3 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column
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1
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586, 3904, 24182, 123739, 609565, 2696488, 11697274, 47575204, 191527226, 740673411, 2848714884, 10679966309, 39919058437, 146791696499, 538812135978, 1957471091980, 7102211736792, 25606426267704, 92214319488546
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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 61 (see link above)
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EXAMPLE
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Some solutions for n=4
..1..0..2....1..0..1....0..1..3....2..1..3....1..0..2....2..0..2....0..0..1
..1..1..0....2..0..2....1..0..1....2..0..1....0..1..2....0..0..0....2..0..2
..1..0..2....0..3..0....1..3..1....2..3..3....0..1..1....1..1..1....0..0..3
..0..2..1....1..3..1....1..0..3....2..0..1....1..3..2....3..0..3....1..2..2
..0..1..3....1..2..1....3..1..3....2..3..3....0..1..1....3..1..3....1..3..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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