A214903 Number of nXnXn triangular 0..5 arrays with every horizontal row nondecreasing and having the same average value

6, 12, 50, 458, 7550, 210914, 8943218, 560965610, 49301091506, 5963375071586, 960019298157026, 203519951213429090, 55357173186669891938, 19153563370287789473858, 8293491297187189536699650

Offset

1,1

Comments

Column 5 of A214906

Links

R. H. Hardin, Table of n, a(n) for n = 1..107

Example

Some solutions for n=4
.....4........2........3........4........4........3........3........4
....4.4......0.4......2.4......3.5......3.5......3.3......1.5......3.5
...3.4.5....1.2.3....2.2.5....3.4.5....3.4.5....3.3.3....2.3.4....4.4.4
..4.4.4.4..0.0.3.5..2.3.3.4..3.4.4.5..3.3.5.5..1.3.4.4..3.3.3.3..3.3.5.5

Crossrefs

Sequence in context: A342302 A018809 A226882 * A372900 A256584 A117866

Adjacent sequences: A214900 A214901 A214902 * A214904 A214905 A214906

Keyword

nonn

Author

R. H. Hardin Jul 29 2012

Status

approved