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A197939 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,0,1,2,1,1,1 for x=0,1,2,3,4,5,6 0
1, 4, 10, 68, 882, 9972, 355820, 18442496, 1309834738 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Every 0 is next to 0 6's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 2's, every 4 is next to 4 1's, every 5 is next to 5 1'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 7X7X7

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

.......1.1............1.2............2.1............1.2............1.2

......1.6.1..........1.3.1..........1.3.1..........1.5.1..........1.5.1

.....0.1.1.0........0.2.2.0........0.2.2.0........0.1.1.0........0.1.1.0

....1.2.4.1.1......1.1.4.1.1......2.1.4.1.1......1.2.4.1.1......1.1.4.2.1

...1.3.2.1.5.1....1.6.1.1.5.2....1.5.1.1.6.1....2.3.2.1.6.1....1.6.1.2.3.1

..0.2.1.0.1.2.0..0.1.1.0.1.1.0..0.1.1.0.1.1.0..0.1.1.0.1.1.0..0.1.1.0.1.2.0

CROSSREFS

Sequence in context: A300642 A146304 A189893 * A207160 A244297 A207159

Adjacent sequences:  A197936 A197937 A197938 * A197940 A197941 A197942

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 19 2011

STATUS

approved

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Last modified November 15 21:37 EST 2019. Contains 329168 sequences. (Running on oeis4.)