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A214901 Number of nXnXn triangular 0..3 arrays with every horizontal row nondecreasing and having the same average value 1
4, 6, 14, 50, 242, 1682, 13442, 134402, 1612802, 22579202, 361267202, 6864076802, 144145612802, 3459494707202, 93406357094402, 2802190712832002, 92472293523456002, 3421474860367872002, 136858994414714880002 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A214906

LINKS

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

EXAMPLE

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

CROSSREFS

Sequence in context: A277059 A096003 A114058 * A284123 A135093 A141667

Adjacent sequences:  A214898 A214899 A214900 * A214902 A214903 A214904

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 29 2012

STATUS

approved

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Last modified July 13 05:18 EDT 2020. Contains 335673 sequences. (Running on oeis4.)