A197874 - OEIS

A197874

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

1, 2, 14, 75, 395, 7824, 301091, 11257797, 652574674, 84965445327, 18374481313916

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OFFSET

1,2

COMMENTS

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

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

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

.........2................0................0................0

........2.2..............1.0..............1.0..............0.1

.......0.0.1............0.2.2............0.2.2............2.2.0

......0.6.0.0..........1.2.5.2..........1.2.5.2..........2.5.2.1

.....0.0.0.2.2........0.0.2.4.2........0.0.2.4.2........2.4.2.0.0

....2.2.2.2.4.2......0.6.0.2.3.2......0.6.0.2.3.2......2.3.2.0.6.0

...2.5.4.4.3.4.2....0.0.0.2.4.4.2....2.0.0.2.4.4.2....2.4.4.2.0.0.2

..0.2.2.2.2.2.2.0..0.0.0.0.2.2.2.0..2.2.0.0.2.2.2.0..0.2.2.2.0.0.2.2

CROSSREFS

Sequence in context: A119913 A296983 A304049 * A104871 A172060 A277297

Adjacent sequences: A197871 A197872 A197873 * A197875 A197876 A197877

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 18 2011

STATUS

approved