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A257429
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Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally
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1
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41140, 119393, 449022, 1770206, 5985744, 19771628, 64652177, 195603505, 586920722, 1743331948, 5079106522, 14663485366, 42004087573, 119219661191, 336143582507, 942853480005, 2631756218200, 7318423088042, 20289444965118
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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=2
..0..0..0..0....1..0..1..0....0..0..1..1....0..0..1..1....0..1..0..0
..0..0..0..1....0..0..0..1....0..0..1..1....0..0..0..1....0..1..1..0
..1..1..1..1....0..1..0..1....0..0..1..0....0..1..0..0....0..1..0..0
..1..0..0..0....0..1..0..1....0..0..1..0....1..0..0..1....0..1..1..1
..1..0..0..0....0..1..0..0....1..0..1..0....0..1..1..1....0..1..1..0
..1..1..0..1....0..0..1..1....1..1..1..1....0..1..1..1....0..1..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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