A207918 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.

2, 4, 4, 6, 16, 6, 9, 36, 36, 10, 13, 81, 98, 100, 16, 19, 169, 271, 358, 256, 26, 28, 361, 665, 1309, 1152, 676, 42, 41, 784, 1675, 4181, 5371, 3910, 1764, 68, 60, 1681, 4344, 13759, 21145, 23637, 12994, 4624, 110, 88, 3600, 11081, 46800, 86255, 117835

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....98....271.....665.....1675......4344......11081.......28136

.10..100...358...1309....4181....13759.....46800.....156135......518564

.16..256..1152...5371...21145....86255....366330....1520815.....6276388

.26..676..3910..23637..117835...612439...3327954...17621905....92785236

.42.1764.12994.101069..628945..4105063..28188778..187980955..1245595210

.68.4624.43596.438103.3426491.28280693.247024548.2088382007.17532981294

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..418

Crossrefs

Column 1 is A006355(n+2)

Column 2 is A206981

Column 3 is A207462

Row 1 is A000930(n+3)

Row 2 is A207170

Row 3 is A207306