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A222324
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Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order
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1
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3, 7, 19, 52, 165, 835, 3307, 14419, 66213, 302731, 1350601, 6283864, 28864821, 132830017, 617677553, 2862431936, 13363660417, 62171655121, 291908874951, 1362607426103, 6418589261153, 30080186463929, 142028701850239
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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..0..0..0....0..1..1..1....0..0..0..1....0..0..0..0....0..0..0..1
..0..0..0..1....0..1..1..1....1..1..1..1....0..0..0..0....0..0..0..0
..0..0..0..1....0..1..1..1....1..1..1..1....1..0..0..0....0..0..0..1
..0..0..0..0....1..1..1..1....1..1..1..1....1..1..0..0....0..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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