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A270611
Number of 6X6X6 triangular 0..n arrays with some element plus some adjacent element totalling n+1 or n-1 exactly once.
1
0, 0, 44168712, 38923001616, 1749723617976, 176610474548304, 4288332432901128, 139782884096635692, 1969237211896886586, 29229202706222377392, 264578668721400632640, 2322718464029360624340, 14967526923376689281208
OFFSET
1,3
COMMENTS
Row 6 of A270606.
LINKS
EXAMPLE
Some solutions for n=3
.......0............0............0............0............0............0
......0.0..........0.0..........0.0..........0.0..........0.0..........0.0
.....0.1.0........0.3.0........3.0.3........3.0.0........0.1.0........3.0.0
....0.0.0.0......3.0.1.0......0.3.3.0......0.3.0.0......0.0.3.0......0.3.3.0
...0.0.0.0.1....0.0.0.0.0....0.0.3.3.3....0.0.0.0.3....0.0.3.0.0....0.0.0.3.3
..0.0.0.3.0.3..0.0.1.0.0.0..0.0.0.0.0.1..0.0.0.0.1.0..0.0.3.3.0.0..0.0.1.0.0.1
CROSSREFS
Cf. A270606.
Sequence in context: A139029 A206326 A172718 * A049360 A130913 A213353
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 20 2016
STATUS
approved