A197921 - OEIS

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A197921

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

1, 1, 4, 34, 387, 7146, 271266, 17975058, 2117012924, 449079964221

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

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

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

.......1.1............1.1............0.1............3.2............2.3

......1.5.1..........1.5.1..........1.5.1..........0.0.3..........3.0.0

.....4.1.3.0........0.0.1.4........0.1.1.4........0.6.0.0........0.0.6.0

....1.1.0.0.3......0.6.0.1.1......3.0.0.1.1......1.0.0.1.1......0.1.0.0.1

...1.5.0.6.0.2....3.0.0.0.5.1....2.0.6.0.5.1....1.5.1.1.5.1....1.5.1.1.5.1

..0.1.1.0.0.3.0..0.2.3.0.1.1.0..0.3.0.0.1.1.0..0.1.1.4.1.0.0..0.1.1.4.1.1.0

CROSSREFS

Sequence in context: A234313 A367869 A369191 * A196692 A197065 A141007

Adjacent sequences: A197918 A197919 A197920 * A197922 A197923 A197924

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 19 2011

STATUS

approved