A253964 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal median minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

82064, 1048679, 16186768, 240903042, 3635332193, 55074999330, 842101547904, 12802459369072, 195350367766384, 2970097255663872, 45280029102342932, 688881047066816640, 10494585260439156612, 159689411999639997872

Offset

1,1

Comments

Row 4 of A253961

Links

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

Example

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

Crossrefs

Sequence in context: A283418 A330872 A253957 * A253760 A204667 A288472

Adjacent sequences: A253961 A253962 A253963 * A253965 A253966 A253967

Keyword

nonn

Author

R. H. Hardin, Jan 20 2015

Status

approved