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A183486
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Number of n X 3 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors.
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1
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7, 88, 281, 1859, 13246, 63807, 397689, 2438053, 13469845, 81119250, 479643334, 2766405526, 16398672521, 96270399637, 562412130699, 3312658458361, 19432125660759, 113930244019306, 669493281487815, 3928178034671452
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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 5 X 3
..0..2..2....0..0..0....0..2..2....3..1..2....2..2..3....2..1..1....0..3..2
..0..0..0....0..0..0....0..0..0....3..1..2....2..2..3....2..1..1....0..3..2
..0..0..0....0..1..1....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..1..1..0....0..2..2....1..3..3....0..0..0....3..0..1....1..3..1....2..0..2
..3..3..0....0..1..1....1..3..3....2..2..0....3..0..1....1..3..1....2..0..2
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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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