A253967 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal median minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

11244672, 413408572, 18976071008, 841599218625, 37660244542860, 1720060910899929, 78151552269875720, 3551388777118855691, 161414522730006337174, 7337249005943965327063, 333491997982675365149976

Offset

1,1

Comments

Row 7 of A253961

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

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

Crossrefs

Sequence in context: A273879 A321506 A253960 * A253763 A331359 A186090

Adjacent sequences: A253964 A253965 A253966 * A253968 A253969 A253970

Keyword

nonn

Author

R. H. Hardin, Jan 20 2015

Status

approved