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A234987
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Number of (n+1) X (4+1) 0..5 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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7554, 35598, 206556, 1525462, 12242044, 105948984, 951853990, 8853338774, 84210673350, 816873730308, 8033167367750, 79893700183320, 800974540818196, 8081147949233154, 81903548032822434, 833020114573408402
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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=2:
1 0 5 0 4 1 2 3 0 4 1 4 3 2 1 0 1 4 0 5
4 1 4 1 3 2 5 4 3 5 0 1 2 3 4 3 2 3 1 4
5 0 5 0 4 1 2 3 0 4 1 0 3 2 1 0 1 4 0 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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