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A222938
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Sum of neighbor maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and antidiagonal neighbors in a random 0..3 4Xn array
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0
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16, 232, 4096, 63488, 1047664, 16776992, 268435456, 4294967296, 68702202624, 1099511627776, 17592186044416, 281474975006720, 4503599620030464, 72057490958712832, 1152921504606846976, 18446744073700638720
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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..1....0..0..1....0..0..1....0..0..1....0..0..1....0..0..0....0..0..1
..0..1..0....0..1..1....0..0..0....1..0..0....0..0..1....0..1..0....0..1..1
..1..1..1....0..0..1....1..1..0....0..1..0....0..0..0....1..1..0....1..0..0
..0..1..0....0..0..0....1..1..0....0..0..0....0..1..1....0..0..1....0..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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