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A199092
T(n,k)=Number of nXk 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor
4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 420, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 709, 0, 44837, 0, 44837, 0, 709, 0, 0, 0, 24353, 0, 0, 0, 0, 24353, 0, 0, 0, 0, 0, 5471810, 0, 0, 0, 5471810, 0, 0, 0, 0, 0, 0, 0, 349276385, 0, 0, 349276385, 0, 0, 0, 0, 0
OFFSET
1,12
COMMENTS
Table starts
.0...0.....0.........0.........0...........0.0...........1.0.........0.0......0
.0...0.....0.........5.........0...........0.0.........709.0.........0.0.127973
.0...0.....0.........0.........0...........0.0.......24353.0.........0.0......0
.0...5.....0.......420.........0.......44837.0.....5471810.0.726413391.0.......
.0...0.....0.........0.........0...........0.0...349276385.0.........0.........
.0...0.....0.....44837.........0...........0.0.59171718202.0...................
.0...0.....0.........0.........0...........0.0.................................
.1.709.24353...5471810.349276385.59171718202...................................
.0...0.....0.........0.........0...............................................
.0...0.....0.726413391.........................................................
LINKS
EXAMPLE
Some solutions for 6X4
..0..0..1..2....0..0..1..1....0..0..1..1....0..1..2..0....0..1..2..2
..3..3..1..2....2..2..3..3....2..2..3..3....0..1..2..0....0..1..0..0
..0..2..2..1....1..1..2..2....0..0..2..2....2..2..3..3....3..3..1..1
..0..3..3..1....3..2..3..3....1..1..0..3....3..3..2..1....2..2..3..3
..2..2..0..3....3..2..0..0....3..3..0..3....1..1..2..1....0..3..2..1
..1..1..0..3....0..0..1..1....1..1..2..2....0..0..3..3....0..3..2..1
CROSSREFS
Sequence in context: A157700 A099645 A220412 * A167260 A137520 A010676
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Nov 02 2011
STATUS
approved