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A303039
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Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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21, 363, 360, 2926, 11079, 59654, 345668, 2060154, 13122422, 89037375, 632329265, 4677904112, 35799149696, 280072132889, 2226022479526, 17895152751103, 144903511517451, 1178993189869482, 9624601342853800, 78735791021587131
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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=5
..0..1..1..1..1..1..0. .0..1..1..1..0..1..0. .0..1..0..0..0..0..1
..1..1..1..1..0..1..0. .0..1..0..1..0..1..1. .0..0..0..0..0..1..0
..0..1..0..1..0..1..0. .0..1..0..1..0..1..0. .0..1..0..0..0..1..0
..1..1..0..1..0..1..0. .0..1..0..0..0..1..0. .0..1..0..0..0..0..0
..0..1..0..1..1..0..0. .1..0..0..0..0..0..0. .0..0..0..0..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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