A197742 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 2,3,1,0,0,0,0 for x=0,1,2,3,4,5,6

1, 1, 19, 277, 8113, 584747, 84584638, 27156929082, 18818051940232, 28191505077956117

Offset

1,3

Comments

Every 0 is next to 0 2's, every 1 is next to 1 3's, every 2 is next to 2 1's, every 3 is next to 3 0's, every 4 is next to 4 0's, every 5 is next to 5 0's, every 6 is next to 6 0's

Links

Table of n, a(n) for n=1..10.

Example

Some solutions with all values from 0 to 6 for 6X6X6
.......0............0............0............0............2............2
......0.0..........0.0..........4.0..........0.4..........1.1..........1.1
.....0.6.0........0.6.0........0.0.0........4.0.0........0.3.0........0.3.0
....0.0.0.0......0.0.0.4......0.5.0.0......0.0.5.0......0.5.0.0......0.0.5.0
...4.0.5.3.1....1.3.5.0.0....1.3.0.6.0....0.6.0.3.1....4.0.0.6.0....0.6.0.0.3
..0.0.0.0.1.2..2.1.0.0.3.1..2.1.0.0.0.0..0.0.0.0.1.2..0.0.4.0.0.0..0.0.0.4.0.1

Crossrefs

Sequence in context: A199819 A016187 A016184 * A322628 A322053 A328916

Adjacent sequences: A197739 A197740 A197741 * A197743 A197744 A197745

Keyword

nonn

Author

R. H. Hardin Oct 17 2011

Status

approved