A202161 Number of n X n 0..3 arrays with every row and column running average nondecreasing rightwards and downwards but some diagonal running average having a decrease

0, 0, 55, 11710, 3903255, 3063974013, 6430557449984

Offset

1,3

Comments

Diagonal of A202168

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=4
..0..0..0..2....0..0..2..2....0..2..1..1....0..1..3..2....0..1..1..2
..0..0..3..2....0..1..2..3....0..2..1..1....0..1..3..2....1..1..1..3
..2..3..3..3....2..2..2..3....2..2..2..3....0..2..3..3....3..3..3..3
..1..1..3..3....1..1..2..3....2..3..3..3....2..3..3..3....2..2..2..3

Crossrefs

Sequence in context: A145617 A105842 A113632 * A221734 A268167 A363869

Adjacent sequences: A202158 A202159 A202160 * A202162 A202163 A202164

Keyword

nonn

Author

R. H. Hardin Dec 13 2011

Status

approved