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A222478
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Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order
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1
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17, 139, 2953, 267772, 4927416, 544804117, 17557049164, 3344195404943, 145842478973059, 43014763466911784, 2152016451274069352, 684473548396481784093, 34905249009694803928802
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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..0..1....0..0..0..0..1..2..1....0..0..0..0..0..1..2
..0..0..0..0..0..0..2....0..0..0..0..0..0..0....0..0..0..0..3..1..0
..0..0..0..0..1..3..1....0..0..0..0..0..2..0....0..0..0..0..0..0..3
..0..0..0..0..2..2..3....0..0..0..0..0..3..3....0..0..0..0..0..0..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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