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A214347 Number of nXnXn triangular 0..3 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors 0
4, 36, 660, 23554, 1602092, 205613460, 49555044358, 22380167899116, 18924317057007778, 29956465204908956664, 88786379727557659524194 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A214352

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=3

....0......1......1......0......0......1......2......1......3......2......3

...0.1....3.1....1.2....1.0....1.0....0.3....2.1....3.1....3.2....2.1....3.1

..0.0.3..3.2.1..1.0.2..1.2.0..1.0.1..0.3.3..1.3.1..3.0.2..2.3.0..3.2.0..3.0.2

CROSSREFS

Sequence in context: A002084 A135867 A268470 * A208732 A029989 A163887

Adjacent sequences:  A214344 A214345 A214346 * A214348 A214349 A214350

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 13 2012

STATUS

approved

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Last modified August 7 23:38 EDT 2020. Contains 336279 sequences. (Running on oeis4.)