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

1,1

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

Links

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

Example

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

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

Sequence in context: A207242 A207500 A208164 * A207564 A207419 A208007

Adjacent sequences: A207957 A207958 A207959 * A207961 A207962 A207963

Keyword

nonn,tabl

Author

R. H. Hardin Feb 21 2012

Status

approved