A197615 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 1,5,0,1,4,0,3 for x=0,1,2,3,4,5,6

1, 4, 9, 12, 48, 201, 1063, 8179, 95635, 1618098, 39391794, 1372677618, 68131562100, 4826887174456

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..14.

Example

Some solutions for 5X5X5
......2..........0..........0..........0..........0..........0..........2
.....0.0........0.0........0.0........0.0........2.2........0.0........0.0
....0.0.0......0.0.0......2.2.2......2.2.2......2.0.2......0.0.0......0.0.0
...0.5.5.0....0.0.0.0....0.2.2.0....0.2.2.0....2.0.0.2....0.0.0.0....0.5.5.0
..2.0.0.0.2..0.0.0.0.2..2.0.2.0.0..0.0.2.0.0..0.2.2.2.0..2.0.0.0.2..2.0.0.0.0

Crossrefs

Sequence in context: A359301 A174911 A032820 * A125848 A225752 A066588

Adjacent sequences: A197612 A197613 A197614 * A197616 A197617 A197618

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved