A202714 T(n,k)=Number of n X n 0..k arrays with row sums equal and no column sum equal to the previous

2, 3, 2, 4, 10, 38, 5, 28, 624, 838, 6, 60, 4740, 173860, 75302, 7, 110, 23036, 7788648, 421158558, 27842760, 8, 182, 83994, 147823100, 189412482924, 8496020082856, 37121438930, 9, 280, 250668, 1631287078

Offset

1,1

Comments

Table starts

...........2.............3............4.........5..........6......7...8.9

...........2............10...........28........60........110....182.280

..........38...........624.........4740.....23036......83994.250668

.........838........173860......7788648.147823100.1631287078

.......75302.....421158558.189412482924

....27842760.8496020082856

.37121438930

Links

Table of n, a(n) for n=1..32.

Example

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

Crossrefs

Row 2 is A006331

Sequence in context: A127157 A236406 A247497 * A022662 A295703 A059051

Adjacent sequences: A202711 A202712 A202713 * A202715 A202716 A202717

Keyword

nonn,tabl

Author

R. H. Hardin Dec 23 2011

Status

approved