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A197277
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Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,1,1 for x=0,1,2,3,4
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1
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9, 67, 317, 2731, 16890, 114205, 886737, 6017949, 40918349, 290053910, 2074566978, 14599100959, 101671464178, 714232555115, 5052846176923, 35608078988237, 249861298059545, 1755724243450685, 12370064599008231, 87120870560445460
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OFFSET
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1,1
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COMMENTS
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Every 0 is next to 0 2's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1's
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LINKS
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EXAMPLE
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Some solutions containing all values 0 to 4 for n=4
..1..0..0..1..2....1..1..0..1..2....0..1..3..1..1....1..0..1..1..0
..2..1..1..4..1....0..1..1..4..1....1..4..1..0..0....1..0..1..4..1
..2..1..4..1..0....1..1..4..1..0....3..1..3..1..1....1..0..3..1..3
..1..0..1..3..1....1..0..1..3..1....1..0..0..1..2....2..1..1..0..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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