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A231647
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Number of nX4 0..2 arrays with no element less than a strict majority of its horizontal and vertical neighbors
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1
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22, 341, 7682, 137961, 2412274, 42882766, 765163605, 13643499478, 243317286312, 4340128403053, 77412117578960, 1380680024126767, 24625023800964584, 439200986311182069, 7833405373009045177, 139713294059336266128
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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
..1..1..1..1....1..0..0..2....2..1..0..0....0..1..2..1....1..0..0..2
..0..0..2..2....0..0..0..1....0..0..0..0....0..0..0..1....1..0..0..1
..0..0..2..2....0..0..0..1....0..0..2..1....2..0..0..2....1..2..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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