A253816 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically

47816, 181070, 554638, 1713952, 5585260, 19866443, 64664493, 209048111, 630001617, 1924934567, 5709557722, 16907821580, 49606011484, 146306387392, 435972233308, 1306430490778, 3954599777085, 12004238466384, 36735298554255

Offset

1,1

Comments

Column 4 of A253820

Links

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

Example

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

Crossrefs

Sequence in context: A221017 A254800 A254807 * A190927 A251455 A204402

Adjacent sequences: A253813 A253814 A253815 * A253817 A253818 A253819

Keyword

nonn

Author

R. H. Hardin, Jan 14 2015

Status

approved