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A305250
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Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 4 or 8 king-move adjacent elements, with upper left element zero.
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1
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13, 61, 65, 163, 439, 1149, 2985, 8254, 22801, 62473, 173206, 483696, 1351172, 3787817, 10653872, 29999284, 84591982, 238789052, 674640909, 1907222785, 5394518268, 15264144917, 43204286796, 122316777218, 346357487746
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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..1. .0..0..0..1..0..1. .0..1..1..1..1..0. .0..0..0..0..0..0
..0..0..0..0..0..0. .0..0..1..1..0..0. .1..1..1..1..1..1. .1..0..0..0..0..0
..0..0..1..0..0..0. .0..1..1..1..0..0. .1..1..1..1..1..1. .1..1..0..0..0..0
..0..0..0..0..0..0. .1..1..1..1..0..0. .1..1..1..0..1..1. .1..1..0..1..0..0
..0..1..1..1..0..0. .1..1..1..0..1..0. .1..1..1..1..1..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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