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A220803
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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 and vertical neighbors in a random 0..3 nX4 array
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0
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16, 256, 4096, 62648, 1048576, 16777216, 268435456, 4294967296, 68700598768, 1099511627776, 17592186044416, 281474976710656, 4503599627370496, 72057490800855040, 1152921504606846976
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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..1..0..0....1..1..1..1....1..0..1..1....0..1..1..0....0..0..1..1
..1..1..1..1....1..0..0..1....1..0..1..0....0..1..1..1....0..1..1..0
..1..1..0..1....1..1..1..0....0..1..0..0....1..0..1..0....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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