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A197998 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,3,1,1,1,0,0 for x=0,1,2,3,4,5,6 0
1, 1, 25, 150, 2625, 302653, 20511292, 3596730341, 2243353120897 (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 3's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1'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

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

.......3.1............0.0............1.3............0.0............1.3

......1.4.1..........0.6.0..........1.4.1..........0.6.0..........0.0.1

.....0.2.1.3........1.0.0.0........1.3.1.0........1.0.0.0........1.0.5.0

....0.0.0.1.0......3.1.0.5.1......1.2.0.0.0......3.1.0.5.0......1.3.0.0.0

...0.6.0.0.5.0....1.4.1.0.0.3....3.0.5.0.6.0....1.4.1.0.1.1....1.4.1.0.6.0

..0.0.0.0.0.0.0..0.1.3.1.2.1.1..1.1.0.0.0.0.0..2.1.3.1.1.3.0..1.3.1.2.0.0.0

CROSSREFS

Sequence in context: A198000 A247664 A168571 * A042214 A215760 A305687

Adjacent sequences: A197995 A197996 A197997 * A197999 A198000 A198001

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 20 2011

STATUS

approved

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Last modified February 1 08:20 EST 2023. Contains 359992 sequences. (Running on oeis4.)