login
A197753
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,4,0,0,1,0,0 for x=0,1,2,3,4,5,6
0
1, 4, 15, 154, 2560, 77908, 4327313, 430599055, 75914929553, 23997418533210
OFFSET
1,2
COMMENTS
Every 0 is next to 0 4'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 1's, every 5 is next to 5 0's, every 6 is next to 6 0's
EXAMPLE
Some solutions with all values from 0 to 6 for 6X6X6
.......0............1............1............2............1............2
......0.0..........4.1..........1.4..........0.0..........4.1..........0.0
.....0.5.3........1.1.0........0.1.1........0.6.0........1.1.2........0.6.0
....0.0.0.0......0.0.0.0......0.0.0.0......0.0.0.0......0.3.0.0......0.0.0.2
...0.6.0.1.1....0.6.0.5.0....0.5.0.6.0....0.5.3.1.1....0.5.0.6.0....3.5.0.1.1
..2.0.0.1.4.1..2.0.0.3.0.0..2.0.3.0.0.2..0.0.0.1.4.1..2.0.0.0.0.0..0.0.0.1.4.1
CROSSREFS
Sequence in context: A323564 A246791 A037447 * A197934 A137654 A349402
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 17 2011
STATUS
approved