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A198538
T(n,k)=Number of 2nX2k 0..4 arrays with values 0..4 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors.
4
5, 404, 404, 67442, 7937268, 67442, 11739910, 163506788110, 163506788110, 11739910, 2048681430, 3368739754955320, 397739142470871040, 3368739754955320, 2048681430, 357559607382, 69406373651979823710
OFFSET
1,1
COMMENTS
Table starts
............5..................404....................67442
..........404..............7937268.............163506788110
........67442.........163506788110.......397739142470871040
.....11739910.....3368739754955320.967523967174230258261646
...2048681430.69406373651979823710
.357559607382
LINKS
EXAMPLE
Some solutions for n=3 k=2
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..1..2..0....0..1..2..0....0..1..2..0....0..1..2..0....0..1..2..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..1..3..2..3....3..1..2..2....3..1..2..2....1..3..2..3....2..3..2..3
..0..4..0..0....1..0..2..2....1..0..2..2....3..4..0..4....1..0..3..0
..3..1..0..0....0..4..3..1....2..1..0..4....2..0..4..0....2..1..0..3
CROSSREFS
Sequence in context: A079011 A195502 A189307 * A198535 A128866 A221047
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Oct 26 2011
STATUS
approved