A253956 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal median minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

16544, 142800, 1501724, 16186768, 168988280, 1798654745, 18976071008, 202545992765, 2143481639632, 22818628205489, 241796247828332, 2570703133363269, 27261775134186480, 289612451195150609

Offset

1,1

Comments

Column 3 of A253961

Links

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

Example

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

Crossrefs

Sequence in context: A281480 A170779 A251903 * A253963 A253759 A091089

Adjacent sequences: A253953 A253954 A253955 * A253957 A253958 A253959

Keyword

nonn

Author

R. H. Hardin, Jan 20 2015

Status

approved