A207960 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 0 vertically.

2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 13, 81, 102, 81, 14, 19, 169, 281, 297, 196, 22, 28, 361, 699, 989, 932, 484, 35, 41, 784, 1799, 3080, 3923, 2974, 1225, 56, 60, 1681, 4706, 9994, 15839, 15921, 9723, 3136, 90, 88, 3600, 12161, 32358, 66089, 84013, 67007, 32164

Offset: 1

Author

R. H. Hardin Feb 21 2012

Keywords

• nonn
• tabl

Comments

Table starts

..2....4.....6......9......13.......19........28.........41..........60

..4...16....36.....81.....169......361.......784.......1681........3600

..6...36...102....281.....699.....1799......4706......12161.......31356

..9...81...297....989....3080.....9994.....32358.....104176......335940

.14..196...932...3923...15839....66089....274310....1137227.....4717144

.22..484..2974..15921...84013...454223...2439422...13111617....70473286

.35.1225..9723..67007..463482..3256420..22743106..159145878..1113110358

.56.3136.32164.286299.2593815.23710041.215653086.1965912435.17907299730

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..576

Crossrefs

Column 1 is A001611(n+2)

Column 2 is A207436

Column 3 is A207495

Row 1 is A000930(n+3)

Row 2 is A207170