A207153 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,0,0,2,1,1,1 for x=0,1,2,3,4,5,6

1, 7, 18, 120, 2029, 32882, 1141849, 74280156, 6765095095

Offset

1,2

Comments

Every 0 is next to 0 5's, every 1 is next to 1 0's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 1's, every 5 is next to 5 1'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
........1..............1..............0..............0..............0
.......0.2............2.0............2.2............2.2............2.1
......2.3.0..........0.3.2..........0.3.0..........0.3.0..........0.4.1
.....0.1.2.0........0.2.1.0........1.1.2.0........0.2.1.1........2.1.1.0
....1.1.5.1.1......1.1.5.1.1......1.5.4.1.1......1.1.4.5.1......0.1.5.1.1
...1.6.1.1.4.1....1.6.1.1.4.1....0.1.1.1.6.1....1.6.1.1.1.0....2.3.2.1.6.1
..0.1.1.0.2.0.1..0.1.1.0.2.0.1..0.2.1.0.1.1.0..0.1.1.0.1.1.1..0.2.0.0.1.1.0

Crossrefs

Sequence in context: A304992 A282092 A197938 * A203222 A197940 A196220

Adjacent sequences: A207150 A207151 A207152 * A207154 A207155 A207156

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved