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A232159
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Number of nX6 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal
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1
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26, 2600, 27086, 286770, 3183932, 36275078, 415332300, 4764939084, 54785401618, 629979277720, 7246595856072, 83366908500616, 959177256873984, 11035264357800498, 126966562329855518, 1460839965204197890
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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=3
..3..1..2..3..0..1....3..0..2..3..2..0....3..0..2..1..3..2....0..1..2..1..0..2
..0..3..1..2..3..2....2..1..0..1..3..1....2..1..3..2..1..0....2..3..0..2..3..0
..1..2..3..0..1..0....0..3..2..0..2..3....3..2..1..0..2..3....1..2..3..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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