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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
0
5, 60, 1506, 74260, 6981540, 1232720402, 405643523920, 247808504584204, 280544568122925740, 588171370513791301320
OFFSET
1,1
COMMENTS
Column 4 of A214384
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 14 2012
STATUS
approved