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A304668
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Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 6 king-move adjacent elements, with upper left element zero.
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1
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21, 237, 252, 1366, 5311, 15421, 49516, 163216, 516865, 1750074, 5929076, 19375640, 64686597, 216477114, 712798687, 2370003650, 7909241173, 26191198822, 87032751877, 289870295197, 961813760494, 3195386304270, 10630986578476
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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..1. .0..1..1..1..1..0..0. .0..1..1..0..1..0..0
..0..0..1..1..1..1..0. .1..1..1..1..1..1..0. .1..1..1..1..1..0..1
..1..1..1..1..1..0..0. .1..1..1..1..1..1..1. .1..1..1..1..1..1..1
..0..1..1..1..0..0..0. .1..1..0..1..1..0..0. .0..1..1..1..1..1..1
..1..1..1..0..0..0..0. .0..1..0..0..1..0..1. .1..1..1..1..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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