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A304774
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Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3 or 7 king-move adjacent elements, with upper left element zero.
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1
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64, 719, 685, 2710, 15349, 100581, 540901, 3257711, 19908669, 116435693, 698092944, 4184600633, 24873061228, 148660385563, 888008033892, 5296140822230, 31624461255154, 188795531935106, 1126779295822655
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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..0..0..0..0..0..1. .0..1..1..1..1..1..0. .0..0..1..1..1..1..1
..0..0..0..0..0..0..1. .1..1..0..0..1..1..1. .0..1..1..1..0..0..1
..0..1..0..0..0..0..1. .1..1..1..1..1..0..1. .1..1..1..1..1..1..1
..0..0..1..0..0..1..0. .1..1..1..1..0..1..1. .1..1..1..1..0..1..1
..1..0..0..0..0..0..0. .1..1..1..1..1..1..0. .0..0..0..0..1..1..1
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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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