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A232375
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Number of nX7 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, diagonally or antidiagonally, and no adjacent values equal
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1
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48, 19448, 2046700, 219597458, 24945468636, 2824295623804, 319646954776850, 36234058732024820, 4107330198377776652, 465585399247158982768, 52778440824390526548132, 5982947009339446194736266
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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 n=2
..2..1..0..3..0..1..3....0..1..2..3..1..2..1....2..1..0..1..2..3..2
..0..3..2..3..2..1..3....0..3..2..0..1..0..3....0..3..0..3..2..1..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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