A202757 - OEIS

A202757

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

1, 7, 33, 523, 13393, 671285, 69959124, 13256354590, 5115078510127

(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 1's, every 2 is next to 2 0's, every 3 is next to 3 1's, every 4 is next to 4 2'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..9.

EXAMPLE

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

........0..............2..............1..............0..............0

.......0.0............0.0............3.1............0.2............1.0

......0.6.0..........0.6.0..........1.0.2..........2.2.4..........1.3.1

.....1.0.0.1........1.0.0.0........1.0.0.1........1.0.2.2........0.0.0.1

....1.0.5.0.1......3.1.0.5.0......0.0.5.0.1......1.0.5.0.0......0.0.5.0.2

...3.0.0.2.2.0....1.0.2.2.0.0....0.6.0.2.2.0....0.3.0.0.6.0....0.6.0.2.2.0

..1.1.0.2.4.2.0..1.0.2.4.2.0.0..0.0.0.2.4.2.0..0.1.1.0.0.0.0..2.0.0.2.4.2.0

CROSSREFS

Sequence in context: A207150 A197565 A202762 * A266018 A001795 A336277

Adjacent sequences: A202754 A202755 A202756 * A202758 A202759 A202760

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 23 2011

STATUS

approved