A201150 Number of nX3 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally

11, 56, 235, 860, 2910, 9287, 28452, 84473, 244933, 697065, 1954865, 5417604, 14870436, 40495840, 109564073, 294830410, 789790546, 2107673769, 5606720691, 14874608710, 39372687032, 104018286133, 274358183769, 722650263970

Offset

1,1

Comments

Column 3 of A201155

Links

R. H. Hardin, Table of n, a(n) for n = 1..111

Example

Some solutions for n=8
..0..1..1....0..0..2....0..0..0....0..0..0....0..0..1....0..0..0....0..0..2
..0..1..1....0..2..2....0..0..1....0..0..0....0..0..1....0..1..2....0..2..2
..0..1..1....1..1..2....0..0..1....0..0..0....0..0..1....1..2..2....0..1..2
..0..1..2....1..1..2....0..0..1....0..0..0....0..0..1....2..2..2....0..1..2
..0..1..2....1..2..2....1..1..2....0..1..1....0..2..1....1..2..2....0..1..2
..0..1..2....2..2..2....1..2..2....0..1..2....1..2..2....1..2..2....0..1..2
..2..2..2....1..2..2....2..2..2....0..2..2....1..1..2....1..2..2....1..1..2
..1..2..2....2..2..2....1..2..2....1..1..2....1..2..2....2..2..2....1..1..2

Crossrefs

Sequence in context: A034264 A051946 A224405 * A114030 A071984 A323039

Adjacent sequences: A201147 A201148 A201149 * A201151 A201152 A201153

Keyword

nonn

Author

R. H. Hardin Nov 27 2011

Status

approved