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

Author

R. H. Hardin Dec 23 2011

Keywords

• nonn
• tabl

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

Examples

			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