A253814 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically

2700, 12992, 60392, 181070, 651937, 2008068, 7125170, 23696686, 83201751, 284492002, 989245744, 3404806015, 11765494893, 40505747884, 139520863174, 479991310053, 1651051052299, 5677350741360, 19519625917475, 67108356622603

Offset

1,1

Comments

Column 2 of A253820

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..0..0..1....0..0..1..1....0..0..0..1....0..0..0..1....0..1..0..1
..0..1..1..0....0..0..1..0....0..0..1..0....0..0..0..0....0..0..0..0
..1..1..0..0....1..1..1..0....1..0..0..0....0..0..0..1....1..1..0..0
..1..1..1..0....0..1..0..1....1..1..1..0....1..1..0..1....1..1..1..1
..1..1..0..1....1..0..0..0....1..1..0..1....1..0..0..1....1..1..0..0
..0..0..1..1....1..1..1..1....0..0..1..1....0..0..1..1....0..0..0..0

Crossrefs

Sequence in context: A322525 A254805 A254798 * A054561 A230752 A364795

Adjacent sequences: A253811 A253812 A253813 * A253815 A253816 A253817

Keyword

nonn

Author

R. H. Hardin, Jan 14 2015

Status

approved