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A200804
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Number of nX3 0..2 arrays with no average of any element and its diagonal, antidiagonal, horizontal and vertical neighbors equal to one
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1
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10, 378, 4420, 70534, 1258392, 20829336, 349133136, 5916801764, 99672653784, 1679768996616, 28339196899298, 477878305752628, 8058283551459626, 135897588105196130, 2291737593646865132, 38647016142961331790
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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 4X4
..2..0..1....0..1..0....0..1..0....1..0..1....2..1..2....0..1..0....0..1..2
..0..1..1....0..0..0....2..0..0....1..1..1....2..1..1....2..0..0....0..1..1
..0..0..0....1..1..0....2..0..0....1..0..1....1..1..1....0..0..0....2..0..0
..1..2..0....0..0..2....0..0..2....0..0..1....2..2..2....0..2..0....0..1..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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