A203491 T(n,k)=Number of nXk 0..2 arrays with row sums equal and column sums unequal to adjacent columns

3, 6, 3, 12, 10, 3, 24, 80, 36, 3, 48, 556, 624, 82, 3, 96, 3348, 9540, 3760, 256, 3, 192, 20596, 170868, 173860, 25002, 676, 3, 384, 134412, 3171708, 8518564, 3065704, 171068, 2050, 3, 768, 888232, 59683122, 442135180, 421158558, 56438584, 1107888

Offset

1,1

Comments

Table starts

.3.....6......12.........24..........48..........96.........192........384

.3....10......80........556........3348.......20596......134412.....888232

.3....36.....624.......9540......170868.....3171708....59683122.1152091884

.3....82....3760.....173860.....8518564...442135180.24148894412

.3...256...25002....3065704...421158558.61706303456

.3...676..171068...56438584.20726134056

.3..2050.1107888.1004305424

.3..5826.7411872

.3.17568

.3

Links

R. H. Hardin, Table of n, a(n) for n = 1..58

Example

Some solutions for n=5 k=3
..0..0..1....0..0..2....1..2..1....0..1..2....0..2..0....2..2..1....1..1..0
..0..0..1....2..0..0....2..1..1....0..1..2....0..0..2....2..1..2....1..1..0
..0..1..0....0..1..1....1..2..1....2..1..0....2..0..0....2..1..2....1..1..0
..0..0..1....2..0..0....2..1..1....1..1..1....2..0..0....1..2..2....0..0..2
..0..0..1....0..0..2....1..2..1....2..0..1....1..1..0....2..1..2....2..0..0

Crossrefs

Diagonal is A202712

Sequence in context: A360981 A336769 A337035 * A085709 A120910 A109044

Adjacent sequences: A203488 A203489 A203490 * A203492 A203493 A203494

Keyword

nonn,tabl

Author

R. H. Hardin Jan 02 2012

Status

approved