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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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 7 of A214906

LINKS

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

EXAMPLE

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

CROSSREFS

Sequence in context: A297639 A094253 A208084 * A230987 A060668 A221067

Adjacent sequences: A214902 A214903 A214904 * A214906 A214907 A214908

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 29 2012

STATUS

approved

URL: https://oeis.org/A214905

⇱ A214905 - OEIS