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A254012
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Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally
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0
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512, 7212, 89310, 1016249, 3486340, 12820652, 45398628, 102538840, 261881432, 773696684, 1940850378, 4904675739, 13916479182, 35276177013
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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..0..1..0..0....0..0..1..1..0....0..0..0..1..0....0..1..1..1..1
..0..1..1..1..0....0..0..0..0..0....0..0..0..0..0....1..0..0..0..1
..1..0..0..1..1....1..1..1..1..1....1..0..0..1..1....0..1..1..1..1
..1..1..1..1..0....0..0..1..1..0....1..0..1..1..1....0..1..1..1..1
..1..1..0..1..1....1..1..0..0..1....1..1..1..1..1....0..1..1..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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