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A251846
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Number of (n+2)X(1+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime
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1
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2148, 4953, 15899, 67209, 327193, 1697028, 9016304, 48280085, 259123809, 1392132935, 7481800749, 40211989018, 216132151786, 1161698250394, 6244080094399, 33561655362846, 180392638316345, 969604161599181
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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
..3..2..0....1..3..1....1..0..1....3..1..1....1..1..3....1..3..3....1..0..1
..2..3..2....1..1..1....1..1..0....1..1..1....1..1..1....1..3..3....1..1..3
..2..0..1....1..1..1....3..1..1....3..1..1....1..1..1....1..1..1....1..1..1
..3..0..0....1..1..1....1..1..1....1..1..1....1..1..1....3..1..1....3..1..1
..2..2..1....3..1..3....3..3..1....1..1..1....1..3..3....1..3..3....1..1..3
..0..3..2....1..3..3....3..1..3....1..3..3....3..1..1....3..3..1....1..3..3
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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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