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A203110
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 1,4,0,0,2,2,0 for x=0,1,2,3,4,5,6
0
1, 4, 12, 91, 1025, 17899, 514912, 23374383, 1767641965, 213207884368
OFFSET
1,2
COMMENTS
Every 0 is next to 0 1's, every 1 is next to 1 4's, every 2 is next to 2 0's, every 3 is next to 3 0's, every 4 is next to 4 2's, every 5 is next to 5 2's, every 6 is next to 6 0's
EXAMPLE
Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............0..............0..............2
.......0.3............2.0............0.0............2.0............0.0
......2.2.0..........1.2.0..........0.6.0..........1.2.0..........0.6.0
.....0.5.2.3........2.4.2.0........2.0.0.3........2.4.2.0........3.0.0.2
....0.2.2.0.0......0.0.2.5.2......1.4.2.2.0......0.0.2.5.2......0.2.2.4.1
...0.2.4.0.6.0....0.6.0.2.2.0....2.2.2.5.2.3....0.6.0.2.2.0....3.2.5.2.2.2
..0.2.1.2.0.0.0..0.0.0.3.0.3.0..0.0.0.0.2.0.0..2.0.0.3.0.3.0..0.0.2.0.0.0.0
CROSSREFS
Sequence in context: A209031 A096424 A009629 * A197919 A358003 A009651
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 29 2011
STATUS
approved