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A196540
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Number of n X 4 0..4 arrays with each element equal to the number its horizontal and vertical neighbors less than or equal to itself.
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1
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7, 461, 11200, 340286, 11955804, 492164626, 19551716726, 762304199460, 30102052972401, 1191511814763748, 47012897542283671, 1854609910206450722, 73234604023710412911, 2891416319601153583732, 114129499568282696605287
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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=5
..0..2..1..2....1..0..3..1....1..0..3..1....1..3..2..0....0..2..1..0
..1..4..1..2....2..4..3..0....3..1..2..0....1..2..1..2....1..4..4..2
..3..0..3..3....1..2..2..2....1..4..3..2....2..3..0..3....2..4..0..2
..0..3..4..1....0..4..3..3....1..4..1..0....1..4..2..3....0..3..1..3
..2..0..2..0....1..2..1..1....2..0..3..1....1..2..0..1....1..3..2..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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