A204643 Number of (n+1)X(n+1) 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.

8, 32, 104, 330, 1076, 3702, 13314, 49312, 185786, 706912, 2706218, 10403402, 40120324, 155122378, 601086622, 2333614100, 9075145134, 35345275932, 137846543630, 538257892350, 2104098985192, 8233430753142, 32247603713264

Offset: 1

Author

R. H. Hardin Jan 17 2012

Keywords

• nonn

Comments

Diagonal of A204651

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..63