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A254014
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Number of (n+2)X(2+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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1
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2540, 7212, 26370, 98002, 279743, 774662, 2035893, 5114873, 12474341, 29590558, 68901604, 158137068, 357684484, 800611865, 1776191086, 3909310915, 8548743880, 18587419029, 40212191986, 86599353650, 185779037285, 397204639125
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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=4
..0..0..0..0....0..0..0..0....1..0..1..1....0..1..1..0....0..0..1..1
..1..0..0..0....0..0..0..0....0..0..0..1....0..0..0..0....1..0..0..0
..0..0..0..1....1..0..0..0....0..0..0..1....0..1..1..0....0..0..1..1
..1..0..0..1....0..0..1..1....1..1..1..0....0..0..0..1....1..1..1..0
..0..0..1..1....0..0..1..1....0..1..1..1....1..1..1..1....1..1..1..1
..0..1..1..0....1..1..1..0....0..1..0..0....1..0..1..1....1..1..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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