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A203208
Number of n X n X n 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,5,2,0,1,1,2 for x=0,1,2,3,4,5,6.
0
1, 2, 8, 59, 731, 15277, 624754, 44645754, 5655846794, 1303866008656
OFFSET
1,2
COMMENTS
Every 0 is next to 0 6's, every 1 is next to 1 5's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 1's, every 5 is next to 5 1's, every 6 is next to 6 2's.
EXAMPLE
Some solutions with all values from 0 to 6 for 7 X 7 X 7
........0..............0..............0..............0..............0
.......1.1............3.0............0.3............1.1............2.2
......1.5.1..........0.1.1..........1.1.0..........1.5.1..........2.6.2
.....2.2.1.4........0.1.5.1........1.5.1.0........4.1.2.2........0.2.2.1
....2.6.2.1.1......2.2.1.4.1......2.2.1.4.1......1.1.2.6.2......1.1.1.5.1
...0.2.2.1.5.1....2.6.2.1.5.1....2.6.2.1.5.1....1.5.1.2.2.0....1.5.4.1.1.0
..0.3.0.0.0.1.0..0.2.2.0.1.1.0..0.2.2.0.1.1.0..0.0.1.0.0.3.0..0.1.1.0.0.3.0
CROSSREFS
Sequence in context: A202760 A205075 A203217 * A181010 A197941 A295502
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 2011
STATUS
approved