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A303021
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Number of 7Xn 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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64, 2785, 22652, 123538, 1044810, 11644063, 121524556, 1219773362, 12840308325, 138188869767, 1487261602685, 16048324478816, 174329388978329, 1901869591830415, 20795916418331529, 227842869036330196
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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..1..0. .0..0..0..1..0. .0..0..0..1..0. .0..0..0..1..0
..0..1..0..0..0. .0..0..0..1..0. .0..0..0..1..0. .0..1..0..1..0
..1..0..1..0..1. .0..1..0..1..0. .1..1..1..1..0. .0..1..0..1..1
..1..0..1..0..1. .0..0..1..1..0. .0..1..0..0..1. .0..0..0..0..1
..1..0..1..0..1. .0..1..1..0..0. .0..1..0..1..0. .1..0..1..0..1
..0..1..0..0..1. .0..1..0..1..0. .0..1..0..0..0. .1..0..1..0..1
..0..1..0..0..1. .1..1..0..0..0. .0..1..0..0..0. .1..0..1..0..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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