A198039 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,0,2,1,1,1,2 for x=0,1,2,3,4,5,6

1, 5, 14, 84, 1010, 14730, 541357, 30164869, 2205022165

Offset

1,2

Comments

Every 0 is next to 0 4'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 2's

Links

Table of n, a(n) for n=1..9.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........2..............2..............0..............0..............0
.......2.2............2.2............2.2............2.2............1.1
......1.1.0..........0.1.1..........2.6.2..........2.6.2..........4.1.3
.....0.1.5.1........1.5.1.0........1.2.2.0........0.2.2.1........1.1.0.1
....2.2.1.1.4......4.1.1.2.2......3.0.1.1.1......1.1.1.0.3......0.5.1.2.2
...2.6.2.0.1.1....1.1.0.2.6.2....1.1.1.5.1.2....2.1.5.1.1.1....2.1.1.2.6.2
..0.2.2.1.1.3.0..0.3.1.1.2.2.0..0.1.4.1.0.2.2..2.2.0.1.4.1.0..2.2.1.0.2.2.0

Crossrefs

Sequence in context: A321315 A203225 A308386 * A198091 A197797 A224245

Adjacent sequences: A198036 A198037 A198038 * A198040 A198041 A198042

Keyword

nonn

Author

R. H. Hardin Oct 20 2011

Status

approved