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A266185
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Number of 4Xn arrays containing n copies of 0..4-1 with no element plus any diagonal or antidiagonal neighbor equal to 4-1.
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1
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24, 384, 7768, 226296, 7089448, 253282792, 9451853336, 371640077992, 15004890740488, 621421685721976, 26174574774860264, 1119055728709553688, 48396501869679377480, 2113991818229740211832, 93107795487773857584184
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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
..2..1..2....3..1..2....0..0..2....3..1..0....2..3..2....1..3..0....1..3..1
..0..3..0....1..3..0....1..0..2....0..2..0....1..0..3....2..0..3....3..3..2
..3..2..1....3..1..2....2..3..1....2..1..2....1..3..0....0..3..2....1..2..2
..3..1..0....0..2..0....1..3..3....1..3..3....2..0..1....1..2..1....0..0..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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