A197968 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,5,0,2,2,1,0 for x=0,1,2,3,4,5,6

1, 4, 9, 23, 276, 2955, 54623, 1864724, 103400828, 8959767090

Offset

1,2

Comments

Every 0 is next to 0 5's, every 1 is next to 1 5's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 2'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..10.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............0..............0..............2
.......2.0............2.0............0.0............1.1............0.0
......4.2.0..........4.2.0..........0.6.0..........1.5.1..........0.6.0
.....2.2.3.0........2.2.3.0........0.0.0.2........0.1.2.0........2.0.0.0
....0.0.0.2.1......0.0.0.2.1......1.1.0.2.3......0.0.0.4.2......4.2.0.1.1
...0.6.0.1.5.1....0.6.0.1.5.1....1.5.2.2.4.2....0.6.0.2.2.0....2.2.3.2.5.1
..0.0.0.2.1.1.0..0.0.0.0.1.1.0..0.1.1.0.2.0.0..0.0.0.2.3.0.0..0.0.0.0.1.1.0

Crossrefs

Sequence in context: A238832 A192473 A027119 * A319762 A196034 A196037

Adjacent sequences: A197965 A197966 A197967 * A197969 A197970 A197971

Keyword

nonn

Author

R. H. Hardin Oct 19 2011

Status

approved