A197971 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,5,1,1,1,1,0 for x=0,1,2,3,4,5,6

1, 1, 1, 50, 244, 854, 141308, 15242696, 554207242, 82170969714, 75445949682688

Offset

1,4

Comments

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

Links

Table of n, a(n) for n=1..11.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............2..............0..............2..............0
.......1.1............1.1............1.1............1.1............0.1
......1.5.1..........1.5.1..........1.5.1..........1.5.1..........1.5.1
.....0.0.1.4........0.0.1.4........0.2.1.4........4.1.0.0........2.1.1.4
....0.0.3.1.1......0.0.3.1.1......0.0.3.1.1......1.1.3.0.0......0.0.3.1.1
...0.6.0.1.5.2....0.6.0.1.5.1....0.6.0.1.5.1....1.5.1.0.6.0....0.6.0.0.5.1
..0.0.0.2.1.1.0..0.0.0.2.1.2.0..0.0.0.2.1.0.0..2.1.0.0.0.0.0..0.0.0.0.1.1.0

Crossrefs

Sequence in context: A251065 A231087 A235956 * A235567 A091883 A091414

Adjacent sequences: A197968 A197969 A197970 * A197972 A197973 A197974

Keyword

nonn

Author

R. H. Hardin Oct 19 2011

Status

approved