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A221252
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Number of nX5 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2
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1
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8, 392, 22268, 1319409, 78633756, 4684821704, 278802326676, 16577412686597, 985111139474492, 58519095228020616, 3475483474225610814, 206383882956736627050, 12254681900155763390448, 727625190336114167472388
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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
..1..1..1..2..0....0..1..0..2..0....0..2..1..1..0....0..1..1..2..0
..0..1..2..2..0....2..2..1..1..1....1..2..0..2..2....2..2..0..2..0
..1..2..0..1..1....1..1..1..2..0....1..0..1..2..0....0..0..2..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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