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A234893
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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 1, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
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1
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3456, 20404, 113288, 743436, 4634504, 32110856, 208211944, 1482491852, 9763925800, 70741188392, 469704123072, 3449044260864, 23022329803976, 170950844777056, 1145540286614792, 8587053971274908, 57714312161683112
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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=3:
4 6 5 2 2 0 4 1 3 0 2 0 1 4 0 2 5 3 6 5
1 4 2 0 6 3 6 2 5 3 6 3 3 5 2 5 3 0 2 0
4 6 5 4 2 0 4 1 4 1 5 1 1 4 0 2 5 3 6 5
1 4 2 0 6 3 6 2 5 3 6 3 2 6 1 4 3 0 2 0
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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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