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A219152
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Unchanging value maps: number of nX4 binary arrays indicating the locations of corresponding elements unequal to no horizontal, antidiagonal or vertical neighbor in a random 0..1 nX4 array
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1
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7, 21, 104, 531, 2708, 13725, 69784, 354500, 1800573, 9147029, 46470551, 236075721, 1199269936, 6092401321, 30950120371, 157229758186, 798741995975, 4057687878111, 20613461578083, 104718433050887, 531979987846229
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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..0..0....0..0..1..1....1..0..0..1....0..0..0..0....1..1..1..0
..1..1..0..0....0..0..0..0....1..0..0..1....0..0..0..0....1..1..0..0
..1..1..0..0....0..0..0..0....1..0..0..1....1..0..0..1....1..1..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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