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A222447
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Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nX4 array
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1
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16, 210, 4056, 65536, 1048576, 16750154, 268430848, 4294967008, 68716055088, 1099511627776, 17592186044416, 281474975268864, 4503599621232000, 72057594037927936, 1152921504606846976, 18446744065442448416
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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....1..1..1..0....0..0..1..0....1..0..1..1....0..0..1..1
..1..0..0..0....0..1..1..1....1..1..1..1....1..0..1..1....1..0..1..0
..0..1..1..1....1..0..0..1....0..0..1..1....1..0..1..1....1..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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