A214905 Number of nXnXn triangular 0..7 arrays with every horizontal row nondecreasing and having the same average value.

8, 20, 136, 2490, 100350, 8156190, 1207302502, 309961452102, 129904063711602, 85673347663408802, 85480932170854384802, 125968968872611859748002, 266580924247101550726536002, 795103957638983793244454088002

Offset: 1

Author

R. H. Hardin Jul 29 2012

Keywords

• nonn

Comments

Column 7 of A214906

Examples

			Some solutions for n=4
.....3........5........3........3........2........5........3........4
....3.3......5.5......1.5......1.5......0.4......3.7......2.4......3.5
...0.4.5....1.7.7....0.3.6....0.3.6....0.3.3....5.5.5....1.4.4....1.4.7
..0.4.4.4..4.4.6.6..1.1.5.5..1.1.4.6..0.0.3.5..2.6.6.6..1.3.4.4..3.3.5.5
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..79