A197938 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,0,0,1,2,1,1 for x=0,1,2,3,4,5,6

1, 7, 18, 118, 2239, 29226, 1186857, 77129141, 6322573893

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 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..............0..............0..............0..............0
.......2.0............1.1............1.1............2.2............1.1
......2.4.2..........1.6.1..........1.6.1..........0.4.0..........1.5.1
.....0.0.2.0........0.1.1.0........0.1.1.0........0.2.2.0........0.1.3.0
....1.3.1.1.1......0.2.3.3.1......2.2.3.1.1......1.1.3.1.1......1.1.1.0.2
...1.5.1.1.6.1....2.4.2.1.5.1....0.4.0.2.5.1....1.6.1.3.5.1....1.6.1.2.4.2
..0.1.1.0.1.1.0..0.2.0.0.1.1.0..0.2.2.0.1.1.0..0.1.1.0.1.1.0..0.1.1.0.2.0.0

Crossrefs

Sequence in context: A207158 A304992 A282092 * A207153 A203222 A197940

Adjacent sequences: A197935 A197936 A197937 * A197939 A197940 A197941

Keyword

nonn

Author

R. H. Hardin Oct 19 2011

Status

approved