A201831 Number of nX3 0..3 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.

23, 212, 1629, 11180, 71501, 434721, 2553223, 14601638, 81799885, 450682446, 2449953613, 13173208338, 70201196318, 371356326457, 1952380236002, 10211349328475, 53172089972396, 275828459680751, 1426182115328813

Offset: 1

Author

R. H. Hardin Dec 05 2011

Keywords

• nonn

Comments

Column 3 of A201836

Examples

			Some solutions for n=5
..0..1..1....0..1..1....0..0..1....0..0..1....1..1..1....0..3..3....0..0..2
..1..1..2....0..1..2....0..0..3....0..1..1....1..1..2....0..3..3....0..3..2
..1..2..2....1..3..2....2..3..3....0..3..2....1..2..2....3..3..3....2..2..2
..1..2..2....1..2..2....1..3..3....0..3..3....1..3..3....1..3..3....2..3..3
..1..2..2....3..3..3....2..3..3....1..3..3....2..2..3....3..3..3....2..3..3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..45