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A251398
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Number of (n+1) X (4+1) 0..3 arrays with no 2 X 2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.
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1
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647154, 442476530, 301644677965, 205729518595782, 140311657486510902, 95695193651485137766, 65265944559607354012467, 44512625089074325076093620, 30358463245869796237858714204, 20705053555910102684134541106487
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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
..2..1..3..3..0....0..2..3..1..2....2..3..2..2..3....2..2..0..2..1
..0..1..2..0..1....2..1..1..0..2....2..0..0..2..0....0..0..3..1..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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