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A222537
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Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order
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1
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4, 8, 32, 161, 929, 5216, 28925, 162141, 912903, 5173092, 29396683, 167762776, 959322582, 5502320951, 31616397343, 182059946130, 1050008499634, 6065589521359, 35085427384190, 203204644416910, 1178212820481460
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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
..0..0..0..0....0..0..0..0....0..1..1..1....0..1..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....1..1..1..1....0..0..0..0....0..0..0..0
..0..1..0..0....1..0..0..1....1..1..1..1....0..0..0..0....0..0..1..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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