A265373 T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no equal horizontal, vertical or antidiagonal neighbors and new values introduced sequentially from 0.

1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 10, 1, 0, 0, 1, 32, 99, 1, 0, 0, 1, 236, 4954, 1146, 1, 0, 0, 1, 1238, 363850, 878953, 15422, 1, 0, 0, 1, 7968, 25964546, 860077644, 192333677, 237135, 1, 0, 0, 1, 49214, 2006263350, 919241950442, 3040856393843, 53404173562

Offset: 1

Author

R. H. Hardin, Dec 07 2015

Keywords

• nonn
• tabl

Comments

Table starts

.1.......0...........0.............0............0..........0............0

.1.......0...........0.............0............0..........0............0

.1.......1...........1.............1............1..........1............1

.1......10..........32...........236.........1238.......7968........49214

.1......99........4954........363850.....25964546.2006263350.159927435847

.1....1146......878953.....860077644.919241950442

.1...15422...192333677.3040856393843

.1..237135.53404173562

.1.4106680

.1

Examples

			Some solutions for n=4 k=4
..0..1..2..0....0..1..2..3....0..1..2..0....0..1..2..3....0..1..2..1
..2..3..1..3....3..0..1..2....3..0..3..2....2..3..0..2....2..0..3..2
..0..2..0..2....1..3..0..1....1..2..1..3....1..2..1..0....3..1..0..3
..1..3..1..3....0..2..3..2....3..0..2..1....3..0..3..1....0..3..1..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..60

Crossrefs

Column 2 is A190823.