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A197920 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 1,3,3,2,0,0,0 for x=0,1,2,3,4,5,6 0
1, 1, 4, 19, 138, 1816, 41597, 1642382, 115083086, 14000480447 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

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

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions with all values from 0 to 6 for 7X7X7

........1..............0..............0..............0..............1

.......2.3............0.0............0.0............0.0............3.2

......3.2.2..........0.5.0..........0.5.0..........0.6.0..........2.2.3

.....0.2.2.3........4.0.2.3........3.2.0.4........0.0.0.4........3.2.2.0

....0.0.3.2.0......0.0.3.2.2......2.2.3.0.0......3.2.3.0.0......0.2.3.0.0

...0.6.0.0.5.0....0.6.0.2.2.3....3.2.2.0.6.0....2.2.2.2.5.0....0.5.0.0.6.0

..0.0.0.4.0.0.0..0.0.0.0.3.2.1..1.2.3.0.0.0.0..1.3.2.3.0.0.0..0.0.0.4.0.0.0

CROSSREFS

Sequence in context: A007788 A259354 A215851 * A208811 A305725 A208992

Adjacent sequences:  A197917 A197918 A197919 * A197921 A197922 A197923

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 19 2011

STATUS

approved

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Last modified January 26 11:22 EST 2022. Contains 350598 sequences. (Running on oeis4.)