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A302533
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Number of 7 X n 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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0, 421, 9091, 15852, 92603, 1551340, 16130212, 82774516, 506265517, 5660323142, 51739325680, 335761691745, 2418466197168, 21927716125718, 184725699865822, 1350254421406010, 10284927374810243, 86141789798720948, 701278900747323768
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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..0..1..1. .0..1..1..0..0. .0..1..0..1..0. .0..1..0..1..0
..1..0..0..0..0. .0..0..1..0..0. .1..0..0..0..1. .1..0..1..0..1
..0..1..1..1..0. .1..0..1..1..1. .0..1..0..1..0. .1..0..1..0..1
..1..0..1..0..0. .0..1..1..0..0. .0..0..0..0..0. .0..1..1..1..0
..1..1..0..1..0. .1..0..1..0..1. .0..1..1..1..1. .1..1..1..1..1
..1..0..0..0..0. .0..0..1..1..1. .1..1..0..1..0. .1..0..0..0..1
..0..1..0..1..1. .0..1..1..0..0. .1..0..1..0..1. .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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