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A251463
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Number of (n+1)X(4+1) 0..2 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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1908, 11134, 62309, 268559, 1125843, 4053903, 14306546, 46070347, 145984578, 437418593, 1291704815, 3690118027, 10390300382, 28744898692, 78318248671, 211976616993, 564325050038, 1504527451304, 3939345742309, 10392736660538
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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 77 (see link above)
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EXAMPLE
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Some solutions for n=3
..1..2..1..2..2....1..0..1..0..1....0..0..0..0..0....1..1..0..2..1
..0..0..2..0..1....1..0..2..0..2....0..2..0..2..0....0..0..1..2..2
..1..2..1..2..2....2..2..1..2..1....0..0..1..0..1....2..0..2..2..1
..0..0..2..2..1....1..0..2..0..2....0..2..2..2..2....1..2..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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