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A234670
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Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).
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1
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229272, 1648188, 11826092, 85076140, 612823800, 4421960468, 31951474920, 231249678820, 1675919782860, 12165195549188, 88420148767440, 643663869538676, 4691581089095824, 34248260363836644, 250321059877067092
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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=1:
0 0 6 1 1 4 0 4 7 7 0 2 0 1 7 0 4 5 6 7
0 4 6 5 1 5 5 5 4 0 5 3 5 2 4 6 6 3 0 5
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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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