A198006 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,2,0,2,2,0,0 for x=0,1,2,3,4,5,6

1, 4, 33, 328, 7415, 275014, 18684018, 2307507868, 504270356235

Offset

1,2

Comments

Every 0 is next to 0 4's, every 1 is next to 1 2's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 2's, every 5 is next to 5 0's, every 6 is next to 6 0's

Links

Table of n, a(n) for n=1..9.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............1..............0..............2
.......0.0............2.0............0.2............0.0............0.0
......0.6.0..........4.2.1..........0.5.0..........0.5.0..........2.1.0
.....2.0.0.0........2.2.0.1........2.0.0.0........2.1.0.0........2.0.5.0
....4.2.0.5.2......0.0.5.0.2......4.2.0.6.0......0.3.0.6.0......0.3.0.0.0
...2.2.3.0.0.2....0.6.0.0.3.0....2.2.3.0.0.1....0.2.2.0.0.0....0.2.2.0.6.0
..0.0.0.2.1.1.0..2.0.0.0.2.2.0..0.0.0.2.2.2.0..0.2.4.2.0.0.2..0.2.4.2.0.0.0

Crossrefs

Sequence in context: A372897 A028576 A093185 * A339654 A347749 A362604

Adjacent sequences: A198003 A198004 A198005 * A198007 A198008 A198009

Keyword

nonn

Author

R. H. Hardin Oct 20 2011

Status

approved