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A265858
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Number of 4Xn arrays containing n copies of 0..4-1 with no element plus any horizontal or antidiagonal neighbor equal to 4-1.
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1
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24, 248, 3344, 74416, 1738864, 50328912, 1456019664, 45181803312, 1421341476312, 46016839245584, 1510138127703816, 50328278983229392, 1695238381680705040, 57677827063819616680, 1978346976445491778144, 68351672418547405173760
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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=4
..2..3..1..0....2..3..3..1....0..0..1..1....1..1..3..1....1..1..3..3
..2..0..1..0....3..2..0..1....2..3..3..2....0..2..0..2....3..2..3..1
..1..3..1..0....0..1..0..2....2..3..2..3....0..1..3..3....2..2..0..0
..2..3..2..3....3..1..0..2....1..0..1..0....0..2..2..3....2..0..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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