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A203284
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Number of nX7 binary arrays with every element neighboring horizontally or vertically both a 0 and a 1
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1
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0, 256, 6528, 311364, 14644480, 674752576, 31747280900, 1482014064400, 69426540922112, 3248414978337424, 152051978649072512, 7116397401627306244, 333073866254926765092, 15589003682173336070436, 729619114019766057116208
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listen;
history;
text;
internal format)
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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=3
..1..1..0..1..1..0..0....1..0..1..1..0..0..1....1..0..0..1..0..0..0
..0..1..0..0..0..0..1....1..0..0..0..1..1..1....1..0..0..1..1..1..1
..0..1..0..1..1..0..1....1..0..1..1..1..0..0....1..0..0..1..1..0..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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