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A223470
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Number of nX4 0..2 arrays with no more than floor(nX4/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order
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1
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10, 58, 522, 1341, 6708, 15374, 61477, 142610, 503050, 1229381, 4007618, 10383806, 32253501, 87752662, 265341502, 747479421, 2231002754, 6428099474, 19090887233, 55776955238, 165509837454, 487703210601, 1448557505782, 4291268460250
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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
..0..1..2..0....0..1..0..2....0..1..2..0....0..1..0..2....0..1..0..1
..2..1..1..1....2..1..1..1....2..1..1..1....1..2..1..1....2..1..2..2
..1..0..1..0....1..1..2..1....1..1..2..0....0..1..1..1....1..0..1..0
..1..2..1..2....2..0..1..0....2..0..1..1....2..1..2..0....1..2..1..2
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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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