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A195954
Number of nXnXn 0..6 triangular arrays with each element equal to the number of its neighbors unequal to itself
0
1, 4, 4, 6, 13, 14, 38, 37, 108, 563, 3086, 5837
OFFSET
1,2
EXAMPLE
Some solutions for n=10
...........2....................2....................2
..........3.4..................3.3..................3.3
.........3.6.2................4.6.2................4.6.2
........2.2.2.2..............2.2.2.2..............2.2.2.2
.......4.2.2.6.3............3.2.2.5.4............3.2.2.5.3
......3.5.2.4.4.3..........3.6.2.5.6.2..........3.5.2.5.4.3
.....3.5.2.2.4.6.2........2.2.2.2.2.2.2........2.5.2.2.4.4.2
....2.2.2.2.2.2.2.2......3.2.2.5.2.2.5.4......2.2.2.2.2.2.2.2
...3.2.2.5.5.2.2.6.4....3.6.2.5.6.2.5.6.3....3.6.2.5.5.2.2.6.4
..2.3.2.3.3.4.2.3.3.2..2.4.2.2.4.2.2.4.3.2..2.3.2.2.3.3.2.3.3.2
CROSSREFS
Sequence in context: A054223 A160643 A078321 * A278532 A352845 A128089
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 25 2011
STATUS
approved