A197740 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,3,2,0,0,0,2 for x=0,1,2,3,4,5,6

1, 2, 23, 359, 14055, 1201128, 242811875, 111519014903, 116476823660735

Offset

1,2

Comments

Every 0 is next to 0 6's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 0'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..9.

Example

Some solutions with all values from 0 to 6 for 6X6X6
.......1............0............0............0............0............0
......3.0..........2.2..........2.2..........0.3..........3.0..........2.2
.....0.0.4........2.6.2........2.6.2........4.0.1........1.0.4........2.6.2
....2.2.0.0......1.2.2.0......0.2.2.0......0.0.2.2......2.2.0.0......0.2.2.1
...2.6.2.5.0....3.0.0.5.0....3.0.0.5.0....0.5.2.6.2....2.6.2.5.0....0.5.0.0.3
..0.2.2.0.0.0..0.0.4.0.0.0..1.0.4.0.0.0..0.0.0.2.2.0..0.2.2.0.0.0..0.0.0.4.0.0

Crossrefs

Sequence in context: A276025 A211925 A277830 * A234868 A239109 A266923

Adjacent sequences: A197737 A197738 A197739 * A197741 A197742 A197743

Keyword

nonn

Author

R. H. Hardin Oct 17 2011

Status

approved