A205080 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,0,0,0,0,1,0 for x=0,1,2,3,4,5,6

1, 7, 45, 637, 16989, 844999, 80440531, 14543199305, 4988157792639, 3250320727336649, 4022745826944969378

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 0's, every 4 is next to 4 0's, every 5 is next to 5 1's, every 6 is next to 6 0's

Links

Table of n, a(n) for n=1..11.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............1..............0..............0
.......1.1............1.1............0.2............1.1............0.4
......1.5.1..........1.5.1..........0.4.0..........1.5.1..........0.0.0
.....0.1.2.0........0.2.1.0........0.0.3.0........0.1.2.0........0.0.4.0
....3.3.3.0.0......0.0.3.3.3......0.0.3.1.1......0.4.3.0.0......0.0.3.1.1
...0.0.0.0.6.0....0.6.0.0.0.0....0.6.0.2.5.1....4.0.0.0.6.0....0.6.0.2.5.1
..2.0.0.4.0.0.0..0.0.0.0.4.0.0..0.0.0.0.1.1.0..0.0.4.0.0.0.2..2.0.0.0.1.1.0

Crossrefs

Sequence in context: A006680 A197796 A197856 * A232789 A203201 A287064

Adjacent sequences: A205077 A205078 A205079 * A205081 A205082 A205083

Keyword

nonn

Author

R. H. Hardin Jan 21 2012

Status

approved