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A214903 Number of nXnXn triangular 0..5 arrays with every horizontal row nondecreasing and having the same average value 1
6, 12, 50, 458, 7550, 210914, 8943218, 560965610, 49301091506, 5963375071586, 960019298157026, 203519951213429090, 55357173186669891938, 19153563370287789473858, 8293491297187189536699650 (list; graph; refs; listen; history; text; internal format)
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: A032470 A018809 A226882 * A256584 A117866 A290999

Adjacent sequences:  A214900 A214901 A214902 * A214904 A214905 A214906

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 29 2012

STATUS

approved

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Last modified August 4 08:25 EDT 2020. Contains 336201 sequences. (Running on oeis4.)