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A303414
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Number of 7Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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0, 421, 10384, 15852, 115770, 2158662, 24386918, 158640643, 1293822589, 14788283853, 149020593141, 1275569366713, 11671994401668, 115222219445362, 1107799093548111, 10250710845474527, 96126433140397235, 918622040686576956
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OFFSET
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1,2
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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..1..0..1..0. .0..0..1..0..0. .0..0..0..0..0
..0..0..0..0..0. .1..0..0..0..1. .1..1..1..1..0. .0..0..0..0..0
..0..0..0..0..0. .0..0..0..0..0. .1..0..1..0..1. .1..1..0..1..0
..0..1..1..1..0. .1..1..0..1..1. .0..1..1..1..1. .0..0..1..0..0
..1..0..0..0..0. .0..0..0..0..0. .1..0..1..0..1. .0..1..0..1..1
..1..0..1..0..0. .1..0..0..0..0. .1..1..1..1..0. .1..0..0..0..0
..1..1..1..1..0. .0..1..0..1..1. .1..0..0..0..1. .0..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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