A201340 Number of nX2 0..4 arrays with every row and column running average nondecreasing rightwards and downwards but some diagonal running average having a decrease

0, 0, 15, 213, 2007, 15497, 106589, 680287, 4118949, 23981337, 135473879, 747163898, 4040984182, 21504391182, 112888169123, 585765427216, 3009175376793, 15324419276531, 77445651022458, 388752941316532

Offset

1,3

Comments

Column 2 of A201345

Links

R. H. Hardin, Table of n, a(n) for n = 1..96

Example

Some solutions for n=6
..0..1....1..1....0..0....1..2....0..0....0..0....0..1....0..0....0..0....0..2
..0..1....1..3....2..2....1..2....2..2....0..2....0..1....0..0....0..0....2..3
..3..4....2..4....1..4....2..2....1..1....0..1....3..4....3..3....2..2....1..3
..1..2....4..4....1..3....2..4....1..4....1..4....1..2....1..2....3..3....4..4
..2..2....2..3....4..4....4..4....1..2....4..4....1..4....3..4....3..4....3..3
..2..4....2..4....2..3....3..3....1..2....3..3....4..4....4..4....2..2....2..4

Crossrefs

Sequence in context: A252875 A135519 A179091 * A051826 A351515 A081196

Adjacent sequences: A201337 A201338 A201339 * A201341 A201342 A201343

Keyword

nonn

Author

R. H. Hardin Nov 30 2011

Status

approved