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A284074
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Number of nX7 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.
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1
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0, 858, 300008, 45973823, 5950703039, 690497721277, 74965549398304, 7768358494151582, 777826092240727932, 75850300642037184690, 7242483614668041755074, 679759485223346193229835
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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=2
..0..1..1..1..1..0..0. .1..0..0..0..1..1..1. .0..0..0..1..1..1..1
..0..0..1..1..1..1..1. .0..0..1..0..1..1..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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