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A205923
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Number of (n+1)X6 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero
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1
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43572, 625713, 2570656, 40724536, 160958484, 2853968414, 10728448308, 211429772688, 754561785732, 16278205531616, 55286226231796, 1284908055552116, 4173733499632580, 103047990229862968, 322043332960925984
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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=4
..3..1..0..1..0..1....1..2..3..2..3..3....1..0..1..3..3..2....3..2..2..0..3..1
..0..1..1..1..1..1....2..2..2..2..2..3....1..1..1..1..3..1....0..1..2..2..3..3
..1..1..2..1..3..0....2..0..2..3..2..2....2..1..3..1..1..1....1..1..1..2..2..3
..1..2..2..3..3..3....2..2..2..2..2..3....1..1..1..1..2..3....1..2..1..1..2..2
..2..2..3..3..1..2....0..2..0..1..2..2....3..0..1..2..2..2....1..1..1..2..2..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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