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A234919
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Number of (n+1) X (6+1) 0..4 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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12360, 47980, 186500, 990956, 4834440, 28854040, 150606424, 948274980, 5093099972, 33282246680, 182453908840, 1227449650312, 6855533668528, 47143909716212, 268032385984924, 1871592421095824, 10821681133242880
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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:
1 0 1 0 3 0 1 1 4 3 0 1 4 1 0 1 0 3 4 3 0
4 1 0 1 2 1 4 2 3 4 3 2 3 2 1 0 1 2 1 2 1
3 2 3 2 1 2 3 1 0 3 0 1 4 1 2 3 2 1 2 1 2
2 3 2 3 4 3 2 2 3 4 3 2 3 2 1 4 1 2 1 2 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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