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A235505
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Number of (n+1)X(4+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise
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1
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343500, 123132965, 51929974331, 19569523022916, 7279199801456820, 2418013523229434607, 752730448313327438362, 214831987907070104809673, 57553185165696640731112540, 14455366843587099077484369123
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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..1..2..3..0....0..2..3..1..1....0..2..3..1..3....0..2..3..1..2
..1..0..2..0..3....3..1..0..1..2....2..2..0..2..0....2..2..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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