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A234446
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Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).
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1
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8064, 125080, 2053280, 34601928, 588663528, 10079824144, 172781443608, 2969800840496, 51008286679168, 877838573526604, 15089751678627080, 259871199831030144, 4469550891727670024, 77017044139316320812
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OFFSET
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1,1
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LINKS
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FORMULA
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Empirical recurrence of order 92 (see link above).
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EXAMPLE
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Some solutions for n=2:
0 1 0 2 1 1 2 1 0 0 1 1 3 3 3 3 0 1 2 3
3 3 1 4 1 2 2 0 2 1 1 0 1 2 1 2 1 1 1 3
2 1 0 4 0 2 3 0 2 2 3 1 0 0 0 2 3 2 1 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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