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A184561
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Number of (n+1)X7 0..2 arrays with no 2X2 subblock summing to less than 4
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1
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603249, 390354307, 203570564774, 115000791536877, 63392707611948281, 35245029137091490532, 19540724845064600039882, 10844219595929643673506107, 6016136514697924805072162487, 3337980836583341810657426070927
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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 3X7
..0..0..0..2..0..2..0....0..0..0..2..1..1..2....0..0..0..2..0..2..2
..2..2..2..0..2..2..0....2..2..2..0..2..2..0....2..2..2..0..2..1..2
..2..0..0..2..0..1..1....1..0..2..1..1..1..2....0..0..1..2..2..2..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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