A214351 Number of n X n X n triangular 0..7 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors.

8, 232, 20840, 5349708, 3766437036, 7118347901224, 35699489509054494, 472117658204259171294

Offset

1,1

Comments

Column 7 of A214352.

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=3
....4......4......3......6......4......0......4......2......5......0......2
...0.6....7.0....3.2....5.6....4.1....0.0....2.5....1.3....6.3....0.7....6.1
..0.2.7..7.0.5..2.3.2..3.6.0..0.7.1..0.0.2..0.6.3..1.2.3..1.7.1..0.0.7..6.0.7

Crossrefs

Cf. A214352.

Sequence in context: A300798 A240299 A222525 * A303450 A301437 A111836

Adjacent sequences: A214348 A214349 A214350 * A214352 A214353 A214354

Keyword

nonn

Author

R. H. Hardin, Jul 13 2012

Status

approved