A214379 Number of nXnXn triangular 0..3 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

4, 32, 456, 11048, 445024, 29456216, 3183854216, 560099178288, 160085922224504, 74273794007636336, 55915904574400617168, 68294422849744215469224

Offset

1,1

Comments

Column 3 of A214384

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=3
....2......1......2......2......2......2......3......2......1......2......3
...3.2....2.0....0.2....2.3....3.1....3.1....1.3....0.2....2.0....2.1....2.3
..3.0.2..3.0.2..0.3.2..1.3.1..1.3.0..2.3.1..2.1.3..0.3.1..2.3.0..3.0.3..3.2.3

Crossrefs

Sequence in context: A009668 A005121 A327379 * A192500 A192486 A037964

Adjacent sequences: A214376 A214377 A214378 * A214380 A214381 A214382

Keyword

nonn

Author

R. H. Hardin Jul 14 2012

Status

approved