A202742 T(n,k)=Number of nXk 0..1 arrays with row sums equal and column sums unequal to adjacent columns

2, 2, 2, 2, 2, 2, 2, 6, 8, 2, 2, 22, 38, 10, 2, 2, 54, 140, 86, 32, 2, 2, 102, 638, 838, 282, 44, 2, 2, 214, 3032, 6870, 5092, 1074, 128, 2, 2, 582, 14258, 62398, 75302, 29680, 2802, 186, 2, 2, 1590, 70136, 613950, 1375912, 827502, 183220, 8694, 512, 2, 2, 3814

Offset

1,1

Comments

Table starts

.2...2.....2........2...........2............2.............2.............2

.2...2.....6.......22..........54..........102...........214...........582

.2...8....38......140.........638.........3032.........14258.........70136

.2..10....86......838........6870........62398........613950.......6018166

.2..32...282.....5092.......75302......1375912......24620522.....472929952

.2..44..1074....29680......827502.....27842760.....967878370...35772388788

.2.128..2802...183220.....8870150....578826040...37121438930.2639009446600

.2.186..8694..1061814....93402390..11600238174.1401569558590

.2.512.30170..6630116...969837470.239443637912

.2.772.82286.39048472.10133577294

Links

R. H. Hardin, Table of n, a(n) for n = 1..110

Example

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

Crossrefs

Sequence in context: A334510 A211455 A214079 * A248771 A339446 A339166

Adjacent sequences: A202739 A202740 A202741 * A202743 A202744 A202745

Keyword

nonn,tabl

Author

R. H. Hardin Dec 23 2011

Status

approved