A201215 Number of nX7 0..3 arrays with every row and column running average nondecreasing rightwards and downwards

488, 44858, 3216277, 198262359, 11689716107, 671706552402, 37432954261477, 2020620825251740

Offset

1,1

Comments

Column 7 of A201216

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=2
..0..2..1..2..3..3..3....0..0..0..0..0..0..1....0..0..0..2..2..2..1
..2..2..2..3..3..3..3....0..1..3..3..3..2..3....1..1..1..2..3..2..3

Crossrefs

Sequence in context: A223398 A214334 A201835 * A214807 A251676 A230005

Adjacent sequences: A201212 A201213 A201214 * A201216 A201217 A201218

Keyword

nonn

Author

R. H. Hardin Nov 28 2011

Status

approved