A205076 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,6,2,0,1,0,1 for x=0,1,2,3,4,5,6

1, 2, 8, 59, 689, 16094, 621322, 41446894, 4943708059, 1030057568446

Offset

1,2

Comments

Every 0 is next to 0 4's, every 1 is next to 1 6's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 1'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..10.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............0..............2..............0
.......1.1............1.1............1.1............2.2............1.1
......1.6.1..........1.6.1..........1.6.1..........3.0.0..........1.6.1
.....4.1.1.0........0.1.1.4........0.1.1.4........0.0.5.0........4.1.1.0
....1.1.0.0.3......3.0.0.1.1......0.5.0.1.1......1.1.0.1.1......1.1.0.5.0
...1.6.1.5.0.2....2.0.5.1.6.1....2.0.0.1.6.1....1.6.1.1.6.1....1.6.1.0.0.2
..0.1.1.0.0.2.2..2.2.0.0.1.1.0..2.2.3.0.1.1.0..0.1.1.4.1.1.0..0.1.1.0.3.2.2

Crossrefs

Sequence in context: A178165 A214872 A197937 * A205079 A202760 A205075

Adjacent sequences: A205073 A205074 A205075 * A205077 A205078 A205079

Keyword

nonn

Author

R. H. Hardin Jan 21 2012

Status

approved