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A197866 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,2,0,0,2,0,1 for x=0,1,2,3,4,5,6 0
1, 4, 42, 793, 32276, 2592379, 423445648, 145596625120, 102532694528027 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Every 0 is next to 0 4's, every 1 is next to 1 2's, every 2 is next to 2 0's, every 3 is next to 3 0's, every 4 is next to 4 2's, every 5 is next to 5 0's, every 6 is next to 6 1's

LINKS

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

EXAMPLE

Some solutions with all values from 0 to 6 for 8X8X8

.........0................0................0................0

........0.3..............3.0..............2.0..............2.0

.......0.0.2............0.3.0............1.1.0............1.1.0

......2.0.5.0..........0.2.2.0..........1.6.1.0..........1.6.1.0

.....1.1.0.0.2........3.2.4.2.0........2.1.1.2.0........2.1.1.2.0

....1.6.1.0.2.4......0.0.1.1.1.0......0.0.1.4.2.1......0.0.1.4.2.1

...2.1.1.2.3.2.2....3.5.0.1.6.1.0....0.5.3.2.2.0.1....0.5.0.2.2.0.0

..0.0.0.1.0.0.0.0..0.0.0.2.1.1.2.0..2.0.0.0.0.2.2.0..2.0.3.0.2.0.0.0

CROSSREFS

Sequence in context: A221096 A179499 A268567 * A197948 A196194 A197323

Adjacent sequences:  A197863 A197864 A197865 * A197867 A197868 A197869

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 18 2011

STATUS

approved

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Last modified August 15 15:16 EDT 2022. Contains 356146 sequences. (Running on oeis4.)