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A250534
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Number of (n+1)X(6+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction
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1
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559824, 10248336, 142934266, 1660642705, 16593620611, 147966207622, 1206582455860, 9161797846382, 65815657637488, 451382788443396, 2986432140922546, 19151636210288155, 119897524618383239
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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..0..0..0..1..1....0..0..0..0..2..0..1....0..0..0..1..0..0..0
..0..2..2..1..0..3..3....0..2..1..2..0..2..2....3..2..3..0..3..3..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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