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A318347
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Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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8, 11, 21, 29, 62, 136, 279, 624, 1344, 2941, 6444, 14202, 31437, 69791, 155037, 344892, 766957, 1706073, 3794544, 8440354, 18771770, 41756133, 92878060, 206605597, 459593314, 1022399772, 2274386877, 5059572712, 11255394242
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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..0. .0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..0
..0..0..1..1..1. .0..1..0..0..0. .0..0..0..0..0. .0..0..1..0..0
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..1..0..0. .0..0..0..0..0. .0..0..0..0..0. .1..1..1..0..0
..0..0..0..0..0. .1..0..0..0..0. .1..0..0..0..0. .0..1..1..1..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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