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A251477
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Number of (n+1)X(3+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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2908, 24182, 183485, 1096596, 6216665, 30592799, 146035292, 638001419, 2737224051, 11079334278, 44353044487, 170687762327, 652521483414, 2427683848801, 8998599121783, 32733059851689, 118872959422881
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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 99 (see link above)
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EXAMPLE
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Some solutions for n=3
..2..0..1..2....0..0..2..0....2..0..0..2....0..1..0..0....0..2..2..1
..0..0..1..1....3..0..1..2....0..1..2..1....0..2..0..3....3..0..1..1
..2..0..2..1....0..0..2..0....0..2..0..2....0..3..2..2....0..2..2..1
..1..2..1..1....2..3..2..3....2..3..2..3....0..2..0..3....3..0..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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