A197933 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 0,0,2,1,1,1,1 for x=0,1,2,3,4,5,6

1, 4, 4, 44, 553, 4203, 289494, 12835539, 819547071, 248197784731

Offset

1,2

Comments

Every 0 is next to 0 0'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 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..10.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............2..............0..............1..............1
.......1.1............2.2............1.1............0.3............0.1
......1.5.1..........1.3.1..........1.6.1..........1.1.1..........1.5.1
.....0.3.1.0........0.1.3.0........0.1.1.0........1.5.1.0........1.1.1.0
....1.1.4.2.2......1.1.4.1.1......1.1.1.4.1......1.0.1.1.1......1.0.4.1.1
...1.6.1.1.2.0....1.5.3.1.6.1....3.1.5.0.1.2....2.1.4.1.6.1....2.1.3.1.6.1
..0.1.1.0.1.1.1..0.1.1.0.1.1.0..1.0.1.1.1.2.2..2.2.1.0.1.1.0..2.2.1.0.1.1.0

Crossrefs

Sequence in context: A197798 A082794 A269913 * A198005 A027501 A341108

Adjacent sequences: A197930 A197931 A197932 * A197934 A197935 A197936

Keyword

nonn

Author

R. H. Hardin Oct 19 2011

Status

approved