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A221288
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Equals two maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 nX5 array
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0
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7, 200, 5912, 172904, 4983598, 143511784, 4129628435, 118813480496, 3418203388701, 98338490101681, 2829094038032543, 81389941488977962, 2341498869979723606, 67362334665049967042, 1937939871911867309221
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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
..0..1..1..0..1....0..0..0..0..0....0..0..0..0..0....0..0..0..1..0
..1..0..0..1..1....0..0..0..0..0....0..0..0..0..1....1..1..1..1..1
..0..0..0..1..0....1..0..1..0..0....1..1..1..1..0....0..0..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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