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A197913
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,1,1,1,1,0,0 for x=0,1,2,3,4,5,6
0
1, 7, 25, 210, 10243, 262443, 22032028, 4876165115, 1298903907523, 871790327970014
OFFSET
1,2
COMMENTS
Every 0 is next to 0 3's, every 1 is next to 1 1's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1's, every 5 is next to 5 0's, every 6 is next to 6 0's
EXAMPLE
Some solutions with all values from 0 to 6 for 8X8X8
.........0................0................0................0
........0.0..............0.0..............0.0..............0.0
.......0.0.0............0.1.0............0.5.0............0.0.0
......1.1.5.0..........0.0.1.0..........1.0.1.0..........0.6.0.2
.....2.0.0.0.0........0.6.0.0.0........1.0.1.4.1........1.0.0.1.1
....2.1.0.6.0.0......0.0.0.5.1.1......0.0.0.0.1.3......1.4.1.0.0.0
...1.4.1.0.0.2.1....2.2.1.0.0.4.2....1.1.0.6.0.2.1....3.3.1.2.0.5.0
..2.1.2.0.1.1.3.1..1.1.3.1.2.1.1.0..0.2.0.0.0.0.0.1..1.1.2.0.0.0.1.1
CROSSREFS
Sequence in context: A293532 A356628 A208823 * A361777 A215058 A214538
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 19 2011
STATUS
approved