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A186530
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Number of (n+1)X4 0..2 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant
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1
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4020, 129762, 4456218, 150041994, 5043895240, 169733268904, 5709526227226, 192072734086538, 6461422817794236, 217365472732705214, 7312282796005760846, 245988850418456533510, 8275187693250816388800, 278381446241871054077996
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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 3X4
..1..0..2..1....1..1..1..0....1..1..2..1....0..1..0..1....0..1..2..0
..0..2..2..2....1..1..2..2....1..0..2..0....2..1..2..0....0..1..1..2
..2..0..2..0....0..1..0..0....1..1..1..2....2..1..1..2....1..0..1..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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