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A251033
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Number of (n+1)X(4+1) 0..3 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction
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1
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21720, 308423, 3433899, 32439684, 279055227, 2247957615, 17355955112, 130154155397, 957718964643, 6961339210825, 50231364173275, 361033974954169, 2590903481902197, 18593763503880057, 133579469806293855
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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=1
..0..0..1..0..2....2..3..1..2..0....1..1..3..1..3....1..0..3..0..2
..0..1..2..2..0....2..3..1..2..3....1..2..2..2..2....0..1..1..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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