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A220802
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Sum of neighbor maps: number of nX3 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 nX3 array
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1
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8, 48, 512, 4096, 30766, 262144, 2097152, 16728064, 134217728, 1073741824, 8587150368, 68719476736, 549755813888, 4397962625024, 35184372088832, 281474976710656, 2251796346117248, 18014398509481984, 144115188075855872
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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..0..1....0..1..0....1..0..1....1..0..1....0..1..0....0..0..1....0..0..1
..1..1..1....0..1..1....0..1..0....1..1..1....1..0..1....0..0..0....1..1..0
..0..1..1....1..1..1....1..1..0....0..0..1....1..0..0....1..1..1....0..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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