A198031 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,0,0,1,1,1,1 for x=0,1,2,3,4,5,6

1, 7, 18, 124, 2623, 42754, 2497276, 233610277, 29715163222

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 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
........2..............1..............0..............0..............0
.......0.0............1.0............0.2............2.0............2.1
......2.2.2..........1.3.0..........2.3.1..........1.1.2..........0.1.3
.....0.1.1.0........0.1.2.0........0.1.1.0........0.4.1.0........1.1.1.0
....1.1.5.4.1......1.3.4.1.1......1.4.5.1.1......1.1.5.1.2......1.4.5.1.1
...1.6.1.1.1.3....1.5.1.1.6.1....2.1.1.1.6.1....1.6.1.1.1.0....0.3.1.1.6.1
..0.1.1.0.2.0.1..0.1.1.0.1.1.0..0.0.2.0.1.1.0..0.1.1.0.1.3.1..0.2.1.0.1.1.0

Crossrefs

Sequence in context: A203222 A197940 A196220 * A203118 A197656 A205078

Adjacent sequences: A198028 A198029 A198030 * A198032 A198033 A198034

Keyword

nonn

Author

R. H. Hardin Oct 20 2011

Status

approved