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A281324
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Number of nX6 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
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1
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28, 22342, 5192104, 977717308, 166805996158, 26899223667928, 4181821443113978, 633606104886468360, 94186568347536816634, 13796519486189257667162, 1997432551613036750016196, 286445189090932989849214302
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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=2
..0..1..0..1..2..2. .0..0..1..2..0..1. .0..1..0..1..2..2. .0..1..2..1..1..0
..1..1..0..1..1..2. .1..2..0..1..1..1. .0..1..2..0..2..0. .1..2..2..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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