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A303247
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Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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64, 21, 1465, 458, 23995, 41878, 686376, 4288552, 44547581, 435326091, 4420070682, 46247239309, 488935478096, 5159966424970, 55400725550050, 589318077173963, 6332575656503077, 67765552380120662, 727276471899440959
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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..0..0. .0..0..1..1..1. .0..0..1..1..0. .0..0..0..1..1
..1..1..1..0..0. .1..0..0..1..1. .0..0..1..1..1. .1..0..1..1..1
..0..0..0..1..1. .0..0..1..1..1. .0..0..1..0..1. .0..0..1..1..1
..1..0..0..1..0. .0..0..1..1..1. .1..1..0..1..0. .1..0..0..1..1
..1..0..1..1..1. .0..0..1..1..0. .1..1..0..0..0. .0..0..1..1..1
..0..0..0..1..1. .1..0..1..1..1. .0..0..0..0..0. .0..0..1..1..1
..1..0..1..1..1. .0..0..0..1..0. .1..0..1..0..0. .1..0..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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