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A251796
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Number of (n+1)X(3+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01
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1
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6627, 348679, 17195593, 873945739, 44356434596, 2255553135793, 114701510008550, 5833986692886877, 296731470002944944, 15092940450644308394, 767684502371802140711, 39047592997403421809265
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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..2....0..1..0..3....2..2..1..1....1..0..2..2....1..2..2..3
..0..1..2..3....1..0..3..1....1..2..3..3....1..3..3..3....0..1..1..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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