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A326159
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Number of n X n 0..1 arrays with every element unequal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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0
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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 1 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
0 0 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0
0 1 1 1 1 1 0 1 0 1 1 0 1 1 0 1 0 1 0 1
0 0 1 0 1 1 0 1 1 0 0 0 1 0 0 1 1 1 0 0
0 0 0 0 0 0 0 0 1 0 0 1 0 1 0 1 1 0 1 1
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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