A207154 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,0,0,0,1,1,1 for x=0,1,2,3,4,5,6

1, 7, 39, 382, 6840, 199950, 10043572, 854907305, 123241666053, 30305450741376

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 0's, every 3 is next to 3 0'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..............0..............0..............0..............0
.......3.0............1.1............2.0............0.0............1.1
......0.2.2..........1.6.1..........1.1.1..........0.3.2..........1.6.1
.....1.1.1.0........0.1.1.0........0.1.5.1........1.1.1.0........0.1.1.0
....1.4.5.1.1......2.1.5.1.2......1.1.4.1.0......1.4.5.1.1......1.1.4.2.0
...0.2.1.1.6.1....0.3.1.4.2.0....1.6.1.2.3.0....0.2.1.1.6.1....1.1.5.1.3.0
..0.0.2.0.1.1.0..0.0.0.1.1.0.2..0.1.1.0.0.3.0..2.0.2.0.1.1.0..1.0.1.1.0.2.1

Crossrefs

Sequence in context: A219138 A365485 A138417 * A203111 A198048 A305361

Adjacent sequences: A207151 A207152 A207153 * A207155 A207156 A207157

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved