A198038 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,2,0,0,0,0,1 for x=0,1,2,3,4,5,6

1, 4, 48, 1083, 58754, 6986232, 1856160689, 1127146150406, 1548159743720858

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..9.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........2..............0..............0..............0..............0
.......0.0............0.2............0.4............0.4............0.0
......0.5.0..........0.1.1..........2.0.0..........2.0.0..........0.5.0
.....3.0.2.1........1.1.6.1........1.1.3.3........1.1.3.3........3.0.2.1
....0.3.1.1.0......0.2.1.1.2......1.6.1.0.0......1.6.1.0.0......0.3.1.1.0
...4.0.1.6.1.0....0.5.0.3.0.0....2.1.1.2.5.0....2.1.1.2.5.0....4.0.1.6.1.0
..0.0.2.1.1.2.0..0.0.0.3.0.4.0..0.0.0.1.0.0.0..0.0.0.1.0.0.2..0.0.2.1.1.2.0

Crossrefs

Sequence in context: A144828 A138448 A071221 * A024255 A211045 A296838

Adjacent sequences: A198035 A198036 A198037 * A198039 A198040 A198041

Keyword

nonn

Author

R. H. Hardin Oct 20 2011

Status

approved