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A186569
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Number of (n+2) X (n+2) 0..5 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.
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0
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10077696, 1441, 64794, 1831246, 5762806, 7092466, 10131226, 18983086, 52102546, 250276606, 1023882766, 3333167026, 13883727886, 48468351346, 146915043406
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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 4 X 4
..0..0..5..5....0..0..0..0....4..0..0..3....4..0..0..3....4..4..3..4
..0..0..0..4....3..0..0..0....0..4..0..0....0..4..0..0....3..4..4..3
..0..0..0..0....0..3..0..0....0..0..4..0....0..0..4..0....4..3..4..4
..0..0..0..0....4..0..3..0....3..0..0..4....1..0..0..4....4..4..3..4
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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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