A197865 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,0,1,1,1,2,1 for x=0,1,2,3,4,5,6

1, 4, 10, 104, 2091, 34283, 1753893, 146268275, 16031968421

Offset

1,2

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0'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 2'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 8X8X8
.........0................0................1................0
........1.1..............1.1..............0.1..............1.1
.......1.4.2............1.6.1............1.1.4............1.6.1
......0.1.3.1..........0.1.1.0..........1.6.1.1..........0.1.1.0
.....0.2.2.1.0........0.2.2.2.1........0.1.1.0.1........1.3.4.1.2
....1.1.2.5.2.1......1.1.2.5.2.2......1.2.2.3.1.2......3.3.1.2.2.1
...1.6.1.2.2.3.1....2.4.1.0.2.1.2....2.2.5.2.1.3.0....1.1.0.2.5.2.0
..0.1.1.0.1.1.0.1..0.1.3.1.1.2.0.1..0.1.2.1.0.1.2.1..0.3.1.1.2.1.0.0

Crossrefs

Sequence in context: A245304 A298953 A197851 * A267128 A098449 A118378

Adjacent sequences: A197862 A197863 A197864 * A197866 A197867 A197868

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved