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A234994
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Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
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1
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5280, 32256, 222672, 1843956, 16100096, 147975544, 1383273540, 13136508448, 125711250208, 1212052600920, 11747496084952, 114450976252720, 1119844141118852, 11002825088380684, 108500718690978524
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OFFSET
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1,1
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LINKS
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EXAMPLE
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Some solutions for n=2:
4 1 2 3 3 6 5 6 4 2 3 2 0 2 0 1 2 3 6 0
3 2 5 4 0 5 6 5 5 1 4 5 1 5 1 0 1 4 5 1
2 3 4 5 3 6 5 2 6 4 5 4 4 6 0 1 2 3 6 4
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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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