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A251006
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Number of (n+1)X(4+1) 0..2 arrays with no 2X2 subblock having its maximum diagonal element less than the absolute difference of its antidiagonal elements
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1
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31456, 4434257, 623999793, 87861924805, 12371981931569, 1742128826665123, 245313779556192507, 34543306613978027778, 4864137868972651779283, 684932598992197164031725, 96447238828788270436907235
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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 87 (see link above)
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EXAMPLE
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Some solutions for n=1
..2..2..2..2..2....0..1..2..2..1....2..2..2..0..0....0..2..0..0..1
..1..1..1..1..0....0..1..2..0..0....1..2..1..0..2....2..1..0..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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