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A250923
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Number of (n+1)X(4+1) 0..2 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element
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1
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11693, 628146, 34521887, 1887760064, 102912852059, 5613563039740, 306543548743117, 16748448512897363, 915164303259406892, 50004735900048261227, 2732197085743121738233, 149282831158760473142819
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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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FORMULA
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Empirical recurrence of order 81 (see link above)
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EXAMPLE
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Some solutions for n=1
..1..2..2..0..0....1..0..0..2..1....0..0..1..1..0....2..2..0..1..2
..0..1..2..1..2....0..1..0..0..0....0..0..2..2..1....1..2..0..0..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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