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A272972
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Number of nX7 0..1 arrays with exactly n+7-2 having value 1 and no three 1s forming an isosceles triangle.
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0
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7, 18, 23, 8, 10, 4, 4, 4, 2, 48, 24
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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=3
..1..0..0..0..0..1..0. .1..1..1..1..1..1..0. .0..1..0..0..0..0..1
..1..0..0..0..0..1..0. .0..0..0..0..0..0..1. .0..1..0..0..0..0..1
..0..1..1..1..0..0..1. .0..0..0..0..0..0..1. .1..0..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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