A224113 T(n,k)=Number of nXk 0..3 arrays with row sums and column sums unimodal.

4, 16, 16, 50, 256, 50, 130, 3060, 3060, 130, 296, 29922, 141112, 29922, 296, 610, 252912, 5286827, 5286827, 252912, 610, 1163, 1912914, 169786856, 762031090, 169786856, 1912914, 1163, 2083, 13254601, 4837645361, 93991412090, 93991412090

Offset: 1

Author

R. H. Hardin Mar 31 2013

Keywords

• nonn
• tabl

Comments

Table starts

....4........16............50..............130...............296

...16.......256..........3060............29922............252912

...50......3060........141112..........5286827.........169786856

..130.....29922.......5286827........762031090.......93991412090

..296....252912.....169786856......93991412090....44633436796823

..610...1912914....4837645361...10255460738958.18747100782890395

.1163..13254601..125243425246.1013220280453733

.2083..85563043.2997702534361

.3544.521069404

.5776

Examples

			Some solutions for n=3 k=4
..2..0..0..2....0..2..3..0....2..2..0..0....2..0..3..2....2..0..3..0
..2..2..1..0....0..0..3..2....2..0..2..0....2..2..3..0....0..2..2..2
..3..1..2..0....3..3..3..0....0..3..0..2....0..3..1..2....3..3..2..3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..59

Crossrefs

Column 1 is A223659

Column 2 is A223660