A214901 Number of nXnXn triangular 0..3 arrays with every horizontal row nondecreasing and having the same average value.

4, 6, 14, 50, 242, 1682, 13442, 134402, 1612802, 22579202, 361267202, 6864076802, 144145612802, 3459494707202, 93406357094402, 2802190712832002, 92472293523456002, 3421474860367872002, 136858994414714880002

Offset: 1

Author

R. H. Hardin Jul 29 2012

Keywords

• nonn

Comments

Column 3 of A214906

Examples

			Some solutions for n=4
.....1........1........1........2........1........2........1........1
....1.1......1.1......0.2......2.2......0.2......2.2......0.2......1.1
...1.1.1....0.1.2....0.0.3....0.3.3....0.0.3....1.2.3....0.1.2....1.1.1
..0.1.1.2..0.1.1.2..0.1.1.2..0.2.3.3..1.1.1.1..0.2.3.3..0.0.2.2..0.0.2.2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..89