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A254837
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Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally and vertically
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1
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512, 10550, 131776, 701614, 2423232, 8565304, 29838772, 111752868, 415464460, 1638156932, 6343755012, 25417337372, 100688300756, 405939128228, 1625723635116, 6570557207100, 26479623649484, 107227180621124
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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=3
..0..1..1..1..1....0..1..1..0..0....0..1..1..0..0....0..0..1..0..0
..1..1..1..0..1....0..1..1..0..1....1..1..1..1..0....0..1..1..0..1
..0..1..0..0..1....1..0..0..0..0....1..1..0..0..1....0..1..0..1..1
..1..1..0..0..1....0..0..0..0..0....1..1..0..0..1....0..1..0..1..1
..1..0..1..0..1....0..0..0..0..1....0..0..0..0..1....0..0..0..0..1
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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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