A201230 Number of nX3 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other

7, 34, 114, 140, 2462, 18056, 62133, 82861, 1593643, 11978376, 41385355, 54794307, 1094405924, 8362468865, 28876780544, 37796133889, 761894988558, 5848452096002, 20148759500753, 26152640971116, 532945521296121

Offset

1,1

Comments

Column 3 of A201235

Links

R. H. Hardin, Table of n, a(n) for n = 1..36

Example

Some solutions for n=8
..0..0..0....0..1..1....0..0..1....0..0..0....0..1..1....0..0..1....0..0..0
..0..1..1....0..2..1....0..0..1....0..0..1....0..1..1....0..2..1....0..0..1
..0..1..1....0..2..1....0..1..2....0..1..2....0..1..2....0..1..3....0..1..2
..0..1..2....0..2..1....0..3..3....1..1..3....0..3..3....0..1..2....1..3..2
..1..3..3....0..3..2....1..1..2....2..3..3....0..3..2....0..3..2....1..2..3
..2..2..2....0..3..2....2..2..3....1..2..2....0..2..3....1..3..2....1..2..3
..2..3..3....3..3..3....1..2..2....1..2..2....1..3..2....2..3..3....1..3..3
..2..3..3....1..3..2....3..3..3....3..3..3....2..2..3....1..3..2....2..2..3

Crossrefs

Sequence in context: A259055 A195018 A024817 * A071598 A224036 A120470

Adjacent sequences: A201227 A201228 A201229 * A201231 A201232 A201233

Keyword

nonn

Author

R. H. Hardin Nov 28 2011

Status

approved