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A231696
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Number of nX4 0..3 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors
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1
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50, 1998, 115583, 6074096, 286808607, 14007173906, 696904625544, 34390368202345, 1693611631652448, 83546478885400765, 4121506683565058802, 203261277285880002250, 10024941696145652614843, 494455010365407138814774
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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..1....2..0..0..2....0..0..1..3....3..0..1..1....1..2..3..2
..1..0..1..0....0..3..0..2....0..0..3..3....0..0..0..2....1..1..1..1
..0..0..0..0....0..0..0..3....0..2..2..2....1..0..0..3....1..3..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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