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A214535 Number of nXnXn triangular 0..3 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and every horizontal row having the same average value 0
4, 8, 38, 344, 5360, 141470, 6042900, 420213820, 47817344852, 8897304579262 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A214540

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=4

.....2........1........1........2........2........1........1........2

....2.2......1.1......1.1......1.3......2.2......1.1......0.2......2.2

...1.3.2....1.2.0....1.1.1....2.1.3....1.3.2....2.1.0....1.0.2....1.2.3

..3.0.3.2..1.2.1.0..2.1.1.0..3.0.2.3..0.3.3.2..0.3.0.1..2.0.0.2..2.0.3.3

CROSSREFS

Sequence in context: A032151 A032042 A032056 * A321717 A228755 A007215

Adjacent sequences:  A214532 A214533 A214534 * A214536 A214537 A214538

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 20 2012

STATUS

approved

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Last modified August 26 00:35 EDT 2019. Contains 326324 sequences. (Running on oeis4.)