A202787 Number of 5 X 5 0..n arrays with row and column sums equal.

1, 4322, 2577513, 290838284, 11991502235, 255657603186, 3430832678207, 32701809796548, 239657412990669, 1426274971770170, 7169135482380621, 31335724079805792, 121778484808846083, 428134536074377254, 1380524064964529355, 4128449284755670956

Offset: 0

Author

R. H. Hardin, Dec 24 2011

Keywords

• nonn

Examples

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

Crossrefs

Row 5 of A202784.

Extensions

a(0)=1 prepended and a(9)-a(15) from Andrew Howroyd, May 11 2020