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A300688
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Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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8, 981, 37100, 1242620, 42006289, 1431755828, 48809162176, 1662541314220, 56619912876077, 1928366919064951, 65677923512122208, 2236900077280881002, 76185693577077136760, 2594778452806336608700, 88374539564630929465907
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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..0. .0..0..0..0..0..1..0. .0..0..0..0..0..0..1
..0..1..1..1..0..1..0. .0..1..1..0..1..0..1. .0..1..1..0..1..1..1
..0..0..1..0..1..0..1. .0..0..0..1..1..1..0. .0..0..0..1..0..0..0
..0..0..1..0..1..0..1. .0..1..1..0..0..0..1. .0..1..1..1..0..1..0
..1..1..0..1..1..0..1. .0..0..1..1..1..0..1. .1..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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