A214380 Number of nXnXn triangular 0..4 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors

5, 60, 1506, 74260, 6981540, 1232720402, 405643523920, 247808504584204, 280544568122925740, 588171370513791301320

Offset

1,1

Comments

Column 4 of A214384

Links

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

Example

Some solutions for n=3
....2......1......3......1......4......0......2......1......1......2......1
...2.0....1.0....3.4....0.2....3.4....0.3....3.2....2.1....0.2....1.4....0.2
..4.1.0..2.0.3..2.4.3..0.3.0..1.4.0..0.2.3..4.1.3..2.1.3..0.2.4..3.0.4..0.2.3

Crossrefs

Sequence in context: A138447 A084939 A171205 * A218801 A303066 A350360

Adjacent sequences: A214377 A214378 A214379 * A214381 A214382 A214383

Keyword

nonn

Author

R. H. Hardin Jul 14 2012

Status

approved