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A186901
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Number of (n+1)X9 binary arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants
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1
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14860, 19040, 122820, 608194, 2203303, 12599670, 85310077, 523902288, 2795274149, 16608468926, 108609778968, 679604170463, 3947135094182, 24085962638564, 153869560878987, 960883396722563, 5783252949932518
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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 3X9
..1..1..0..0..1..1..1..1..0....0..0..0..1..1..1..0..0..1
..0..1..1..1..1..0..0..1..1....0..0..1..1..0..1..1..0..0
..0..0..0..0..1..1..0..0..0....0..0..1..0..0..0..1..1..1
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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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