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A214388
Number of 6X6X6 triangular 0..n 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
1
64, 211760, 29456216, 1232720402, 26006503128, 348440388682, 3366219398864, 25362185968956, 157029012894616, 828944557039482, 3833275060600576, 15849568260464504, 59538028097491232, 205781154014135148
OFFSET
1,1
COMMENTS
Row 6 of A214384
LINKS
EXAMPLE
Some solutions for n=3
.......0............0............0............0............0............0
......0.2..........0.2..........0.2..........0.2..........0.2..........0.2
.....0.2.0........0.2.0........0.2.1........0.2.1........0.2.0........0.2.0
....2.0.3.0......0.1.2.0......0.2.1.0......0.2.0.1......2.0.2.0......0.3.0.2
...1.3.0.3.0....1.0.2.0.2....0.2.1.0.3....1.0.3.0.1....2.0.3.0.1....3.0.3.0.3
..1.3.2.0.3.0..1.0.2.0.2.0..1.0.2.0.2.3..2.0.3.1.0.2..2.1.0.3.0.1..3.0.2.3.0.3
CROSSREFS
Sequence in context: A029753 A036533 A139565 * A016938 A017010 A203255
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 14 2012
STATUS
approved