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A197914
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,4,2,0,1,2,0 for x=0,1,2,3,4,5,6
0
1, 2, 11, 89, 1798, 57604, 3977006, 533298977, 135886427385
OFFSET
1,2
COMMENTS
Every 0 is next to 0 5's, every 1 is next to 1 4's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 1's, every 5 is next to 5 2's, every 6 is next to 6 0's
EXAMPLE
Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............0..............0..............0
.......2.2............1.1............2.2............2.2............0.0
......2.5.2..........0.4.1..........2.5.2..........2.5.2..........0.6.0
.....2.5.2.0........3.1.2.2........2.5.2.0........0.2.5.2........0.0.0.0
....1.2.2.0.0......0.0.2.5.2......0.2.2.0.0......0.0.2.2.1......2.2.2.3.0
...1.4.0.0.6.0....0.6.0.2.5.2....1.1.0.0.6.0....0.6.0.1.4.1....2.5.5.2.1.1
..0.1.1.3.0.0.0..0.0.0.0.2.2.0..1.4.1.3.0.0.0..0.0.0.3.0.1.0..0.2.2.2.1.4.1
CROSSREFS
Sequence in context: A355425 A099693 A197794 * A371537 A138552 A258221
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 19 2011
STATUS
approved