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A209608
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Number of nX6 1..2 arrays with every element value z a city block distance of exactly z from another element value z
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1
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4, 538, 39667, 1947347, 95442732, 4623938410, 223164388883, 10856162934984, 528920119608746, 25753779566714769, 1253886238749742186, 61044670504573175803, 2971820260865357745857, 144678418539833929320007
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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
..2..1..1..2..2..1....1..1..2..1..2..2....1..1..2..1..2..2....1..1..1..1..2..2
..1..1..1..1..1..1....2..2..2..1..1..1....1..2..2..1..2..1....1..1..1..2..2..2
..2..1..1..2..2..2....2..2..1..1..2..2....1..1..2..1..1..1....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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