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A221631
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Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..3 nX4 array
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1
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8, 176, 3848, 64828, 1047216, 16774800, 268431156, 4294959928, 68719464306, 1099511606852, 17592186009096, 281474976650752, 4503599627268410, 72057594037753300, 1152921504606547488, 18446744073709037416
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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..1..0....1..1..0..1....1..0..1..1....1..0..0..1....1..1..1..1
..1..0..0..0....1..0..1..0....1..1..1..0....0..1..1..1....0..1..0..1
..1..1..1..0....0..0..1..0....1..0..0..1....1..0..0..1....0..1..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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