A203116 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,0,2,2,0,0,0 for x=0,1,2,3,4,5,6

1, 5, 17, 92, 996, 24896, 920636, 71124412, 9968165333, 2577755289185

Offset

1,2

Comments

Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 2's, every 3 is next to 3 2's, every 4 is next to 4 0'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..10.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............2..............0..............0..............0
.......0.0............2.2............0.0............0.0............0.0
......0.5.0..........3.1.0..........0.6.0..........0.0.2..........0.6.0
.....2.2.0.0........2.2.4.0........0.0.0.0........0.5.2.2........0.0.0.0
....3.2.0.6.0......0.2.0.0.0......0.5.0.4.0......0.0.0.1.3......0.4.0.5.0
...2.1.4.0.0.0....0.0.5.0.6.0....2.0.2.2.1.2....0.6.0.4.2.2....2.2.1.2.0.0
..2.2.0.0.0.0.0..0.4.0.0.0.0.0..2.2.0.2.3.2.2..0.0.0.0.0.2.0..0.2.3.2.2.0.0

Crossrefs

Sequence in context: A179684 A250744 A197875 * A198090 A262862 A367921

Adjacent sequences: A203113 A203114 A203115 * A203117 A203118 A203119

Keyword

nonn

Author

R. H. Hardin Dec 29 2011

Status

approved