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A251304
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Number of (n+1)X(4+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the maximum of its antidiagonal elements
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1
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310224, 108857571, 38343620608, 13468082968018, 4729336342478281, 1661155660245079699, 583546015909703620443, 204998612687987844209443, 72015656595745247029716874, 25298940924210464723823638138
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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..2..1..0..0....2..0..1..1..1....2..1..1..2..3....2..1..1..1..0
..2..3..1..2..3....0..1..3..3..2....0..3..3..3..1....2..0..0..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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