A251159 Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements

96, 5054, 231618, 12191612, 1203787298, 190531611192, 50643184293432, 19416483125259158, 12122837536950012216, 11807644473938508493957, 18430004981764028431520387

Offset

1,1

Comments

Diagonal of A251167

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=2
..0..1..1....1..2..3....1..0..2....1..0..3....0..3..3....0..2..2....0..3..3
..0..0..1....0..0..1....2..0..0....1..0..3....0..0..2....2..0..1....1..0..3
..1..1..0....3..2..1....3..2..0....3..1..0....1..0..0....3..3..2....3..1..0

Crossrefs

Sequence in context: A035743 A035809 A017759 * A004392 A229585 A093296

Adjacent sequences: A251156 A251157 A251158 * A251160 A251161 A251162

Keyword

nonn

Author

R. H. Hardin, Nov 30 2014

Status

approved