A214383 Number of nXnXn triangular 0..7 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

8, 224, 18480, 4107248, 2347567992, 3366219398864, 11944886965820440

Offset

1,1

Comments

Column 7 of A214384

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=3
....3......2......3......2......6......4......4......2......7......2......4
...1.5....1.3....4.1....2.7....1.6....4.1....3.5....3.1....7.6....0.5....3.4
..3.1.5..0.5.3..6.1.0..1.7.2..7.0.6..4.1.4..2.6.4..7.0.2..2.7.6..0.5.0..5.0.4

Crossrefs

Sequence in context: A267235 A230144 A013377 * A220546 A189445 A193786

Adjacent sequences: A214380 A214381 A214382 * A214384 A214385 A214386

Keyword

nonn

Author

R. H. Hardin Jul 14 2012

Status

approved