A202166 Number of nX6 0..3 arrays with every row and column running average nondecreasing rightwards and downwards but some diagonal running average having a decrease

0, 1537, 77960, 2676343, 88303390, 3063974013, 110128420642, 3960786183601, 139514050047943, 4771986736150855

Offset

1,2

Comments

Column 6 of A202168

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A231320 A223377 A282543 * A133354 A283900 A104167

Adjacent sequences: A202163 A202164 A202165 * A202167 A202168 A202169

Keyword

nonn

Author

R. H. Hardin Dec 13 2011

Status

approved