A250966 Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.

14, 308, 22048, 5089900, 3794909318, 9135168475316, 71001116832347962, 1781714118279963697630, 144355770055582148091515150, 37761829882206405363232456330430, 31892938416369811765366547510541575588

Offset: 1

Author

R. H. Hardin, Nov 29 2014

Keywords

• nonn

Comments

Diagonal of A250973

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..14