A203122 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,3,2,2,0,0,2 for x=0,1,2,3,4,5,6

1, 2, 8, 38, 470, 8287, 289052, 18346083, 2073906873, 428208650284

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..10.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............0..............0..............0
.......2.2............2.0............2.0............2.2............0.4
......2.6.2..........2.2.0..........2.2.0..........2.6.2..........4.0.0
.....3.2.2.0........3.1.0.0........3.1.0.4........0.2.2.3........0.0.5.0
....2.1.0.5.0......2.2.0.0.4......2.2.0.0.0......0.5.0.1.2......0.0.0.2.2
...2.2.0.0.0.2....2.6.2.5.0.0....2.6.2.5.0.0....4.0.0.0.2.2....0.2.1.2.6.2
..0.0.0.4.0.2.2..0.2.2.0.0.0.0..0.2.2.0.0.4.0..0.0.4.0.0.0.0..0.2.2.3.2.2.0

Crossrefs

Sequence in context: A265906 A060389 A318917 * A207157 A198049 A198092

Adjacent sequences: A203119 A203120 A203121 * A203123 A203124 A203125

Keyword

nonn

Author

R. H. Hardin Dec 29 2011

Status

approved