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A301490
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Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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64, 1063, 4326, 38558, 594953, 8479276, 116648010, 1642511178, 23269383762, 329448536106, 4665726402829, 66101420939287, 936656562909636, 13273745213136152, 188117185109334762, 2666089573263940480
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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..1..0..0..1. .0..1..0..1..0..1..1
..0..0..0..0..0..0..1. .1..1..1..1..0..1..0. .0..1..0..1..1..0..1
..0..0..0..0..1..0..1. .0..0..1..1..1..0..1. .0..1..0..0..0..0..0
..0..1..1..0..0..1..0. .1..0..1..1..1..0..1. .0..0..0..0..0..1..0
..1..0..1..1..1..0..1. .0..1..1..1..1..0..0. .1..0..1..1..0..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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