A251058 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01.

50, 2740, 320950, 71431719, 26192388204, 14586457826568, 11583623256480548, 12514359896491286169, 17723892558531981314400

Offset: 1

Author

R. H. Hardin, Nov 29 2014

Keywords

• nonn

Comments

Diagonal of A251065

Examples

			Some solutions for n=2
..1..0..2....0..0..2....1..0..0....0..1..2....0..1..2....0..0..2....1..1..1
..0..1..2....0..1..1....0..1..2....0..2..2....1..1..1....0..2..2....0..0..2
..0..1..1....1..2..2....0..0..2....1..0..2....0..2..2....1..0..2....1..1..1