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A199041
T(n,k)=Number of nXk 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors
8
0, 0, 0, 0, 0, 0, 0, 3, 3, 0, 0, 12, 10, 12, 0, 1, 29, 127, 127, 29, 1, 3, 143, 631, 3916, 631, 143, 3, 3, 877, 8090, 86544, 86544, 8090, 877, 3, 1, 3516, 59384, 674064, 3806692, 674064, 59384, 3516, 1, 6, 8987, 617083, 35902575, 59029339, 59029339, 35902575
OFFSET
1,8
COMMENTS
Table starts
.0.....0.......0.........0..........0..........1..........3............3
.0.....0.......3........12.........29........143........877.........3516
.0.....3......10.......127........631.......8090......59384.......617083
.0....12.....127......3916......86544.....674064...35902575....750625102
.0....29.....631.....86544....3806692...59029339.7354780137.330637303049
.1...143....8090....674064...59029339.5590093696
.3...877...59384..35902575.7354780137
.3..3516..617083.750625102
.1..8987.5480374
.6.81112
LINKS
EXAMPLE
Some solutions for n=6 k=4
..0..0..0..0....0..0..0..0....0..0..0..1....0..1..0..0....0..1..0..0
..1..2..1..0....0..1..2..0....0..1..2..1....0..1..2..0....0..1..0..0
..1..2..1..0....0..1..2..0....1..1..2..2....2..2..2..0....1..1..2..2
..1..0..2..2....2..2..2..1....2..2..0..2....1..1..1..0....0..0..2..1
..1..0..1..2....2..1..1..1....2..1..0..2....2..2..1..0....2..1..2..1
..2..2..1..2....1..1..2..2....1..1..0..0....2..2..1..1....2..1..2..2
CROSSREFS
Sequence in context: A221768 A283071 A060523 * A199237 A309651 A305541
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Nov 02 2011
STATUS
approved