A203225 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,0,2,1,2,1,1 for x=0,1,2,3,4,5,6

1, 5, 14, 81, 957, 16265, 602311, 33745876, 3308424054

Offset

1,2

Comments

Every 0 is next to 0 6's, every 1 is next to 1 0's, every 2 is next to 2 2's, every 3 is next to 3 1's, every 4 is next to 4 2'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
........0..............2..............0..............2..............0
.......1.1............2.2............1.1............2.2............1.1
......1.5.1..........0.4.1..........1.6.1..........1.4.1..........1.6.1
.....0.3.1.0........0.2.2.0........0.1.1.0........0.2.2.0........0.1.1.0
....1.1.2.2.1......1.1.2.1.1......1.3.2.2.1......1.1.2.1.1......1.3.2.2.1
...1.6.1.2.4.2....1.6.1.3.5.1....1.5.1.2.4.2....1.5.3.1.6.1....1.5.1.2.4.2
..0.1.1.0.0.2.2..0.1.1.0.1.1.0..0.1.1.0.0.2.2..0.1.1.0.1.1.0..0.1.1.0.1.2.2

Crossrefs

Sequence in context: A174939 A320800 A321315 * A308386 A198039 A198091

Adjacent sequences: A203222 A203223 A203224 * A203226 A203227 A203228

Keyword

nonn

Author

R. H. Hardin Dec 30 2011

Status

approved