A214347 Number of nXnXn triangular 0..3 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors

4, 36, 660, 23554, 1602092, 205613460, 49555044358, 22380167899116, 18924317057007778, 29956465204908956664, 88786379727557659524194

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: A135867 A268470 A365650 * A208732 A356616 A029989

Adjacent sequences: A214344 A214345 A214346 * A214348 A214349 A214350

Keyword

nonn

Author

R. H. Hardin Jul 13 2012

Status

approved