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A300798
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Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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1, 8, 228, 23096, 8170504, 10189867088, 44678859224720, 689135333800118172, 37384922495789864734248, 7133341171604127356105213188, 4787286947598320962893540775519384
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OFFSET
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1,2
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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..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..1..0..1. .0..1..0..0..1. .0..0..1..0..0. .0..1..0..0..1
..0..1..1..1..0. .1..0..1..0..1. .0..1..1..0..1. .0..0..1..1..0
..0..1..0..1..0. .1..0..1..0..1. .0..0..1..0..0. .0..1..0..1..0
..0..0..1..1..0. .1..0..1..0..0. .0..0..0..1..0. .1..0..0..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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