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A198290
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T(n,k)=Number of 2nX2k 0..3 arrays with values 0..3 introduced in row major order and each element equal to exactly one horizontal and vertical neighbor
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3
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2, 17, 17, 272, 2452, 272, 4667, 413375, 413375, 4667, 80702, 72559212, 706120206, 72559212, 80702, 1397477, 12940532183, 1275102148950, 1275102148950, 12940532183, 1397477, 24207692, 2322145946560, 2366880827870877
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OFFSET
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1,1
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COMMENTS
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Table starts
.......2..........17...........272..........4667............80702.......1397477
......17........2452........413375......72559212......12940532183.2322145946560
.....272......413375.....706120206.1275102148950.2366880827870877
....4667....72559212.1275102148950
...80702.12940532183
.1397477
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LINKS
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EXAMPLE
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Some solutions for n=4 k=2
..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0
..0..1..2..1....0..1..2..1....0..1..2..1....0..1..2..1....0..1..2..1
..2..3..2..1....1..0..2..1....2..0..2..1....2..3..2..1....2..0..2..1
..2..3..0..0....1..0..3..3....2..0..3..3....2..3..0..0....2..0..3..3
..0..2..1..3....3..3..1..2....0..3..0..2....1..1..2..3....3..1..0..1
..0..2..1..3....0..0..1..2....0..3..0..2....3..3..2..3....3..1..0..1
..1..3..3..0....1..3..0..1....3..2..1..1....2..1..1..2....0..0..2..0
..1..2..2..0....1..3..0..1....3..2..0..0....2..0..0..2....3..3..2..0
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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