A224403 Number of n X n 0..1 arrays with rows unimodal and antidiagonals nondecreasing.

2, 12, 100, 884, 7812, 68282, 590254, 5055858, 42996954, 363652198, 3062704166, 25711681080, 215327121414, 1799987423914, 15026012170736, 125307656075926, 1044220994847456, 8697261784264396, 72413790737672880, 602789200212580366

Offset: 1

Author

R. H. Hardin Apr 05 2013

Keywords

• nonn

Comments

Diagonal of A224409

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..50