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A266095
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Number of n X n integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself.
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0
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1, 5, 64, 929, 53442, 12401485, 6206090116, 5955851105844, 17910530164706984, 181493083347714402782, 4372527304675102033719740, 234910588564744761536499928490
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OFFSET
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1,2
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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..2..1....1..0..1..1....0..1..2..0....0..0..2..1....0..2..1..2
..1..1..0..1....1..2..0..1....2..1..0..0....1..1..0..1....1..0..1..1
..2..1..2..0....0..2..1..1....1..0..2..1....1..0..1..1....1..2..0..0
..1..0..0..1....1..0..0..1....1..1..0..0....1..2..0..0....0..0..0..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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