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A231053
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Number of 5Xn 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero
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1
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0, 22, 2430, 18688, 344136, 10631552, 274004640, 6591073664, 162458658900, 4045673867452, 100391649169040, 2487331534394008, 61659987625594416, 1528888686849171692, 37906407338692090040, 939795970497387880692
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..1..2..3....0..3..2..3....0..1..2..3....0..1..2..3....0..1..0..1
..2..3..0..1....2..1..0..1....0..3..0..1....0..3..0..1....2..3..2..1
..2..1..2..3....2..3..2..1....2..1..2..3....0..3..2..1....2..1..2..3
..2..3..2..1....2..1..2..3....0..1..2..1....0..1..0..3....2..1..0..1
..0..1..0..1....0..3..0..3....0..3..0..1....0..3..2..1....2..3..2..3
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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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